PLEASE I NEED TO KNOW
A mountain climber encounters a gap in an ice field. The opposite side of the gap is 2.75m lower, and is separated horizontally by a distance of 4.1m. To cross the crevasse, the climber gets a running start and jumps in the horizontal direction. (A) What is the minimum speed needed by the climber to safely cross the gap? (B) What is the climber's velocity right before landing?​

Answers

Answer 1

Answer:

A) 5.5 m/s

B) 9.2 m/s

Explanation:

A) Given in the y direction:

Δy = 2.75 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

2.75 m = (0 m/s) t + ½ (9.8 m/s²) t²

t ≈ 0.75 s

Given in the x direction:

Δx = 4.1 m

a = 0 m/s²

t = 0.75 s

Find: v₀

Δx = v₀ t + ½ at²

4.1 m = v₀ (0.75 s) + ½ (0 m/s²) (.75 s)²

v₀ ≈ 5.5 m/s

B) Find vᵧ.

v² = v₀² + 2aΔy

vᵧ² = (0 m/s)² + 2 (9.8 m/s²) (2.75 m)

vᵧ ≈ 7.34 m/s

Find v.

v² = vₓ² + vᵧ²

v² = (5.5 m/s)² + (7.34 m/s)²

v ≈ 9.2 m/s


Related Questions

Explain how your model is different from the model in the picture

Answers

What does your model look like and the one it's being compared to?

Answer:

you should prolly put the model

Explanation:

Complete the paragraph to describe binary systems. A binary star system is made of (blank) stars, one of which is brighter than the other. Astronomers are able to detect the dimmer star because its gravity causes the bright star to (blank). Astronomers can also spot the dimmer star by observing a phenomenon called a(n) (black) binary. This happens when the dim star passes in front of the bright star.

Answers

Answer: two, wobble, eclipsing

Explanation: I am watching the video now

Answer:

Two Wobble eclipsing

Explanation:

I got it right on the Assignment. :)

Which represent correct variations of the formula for speed? Check all that apply. t = d/s s = d/t t = s/d s = dt d = st d = s/t

Answers

Answer: 1 2 5

Explanation:

Galileo Galilei, an Italian physicist, is credited with being the first to calculate speed by dividing it by the distance traveled and the time required. Galileo defined speed as the distance covered in a predetermined period of time. Thus option A, B. E is correct.

What represent correct variations of the formula for speed?

Speed is determined by dividing the distance by the time. Calculating the units for speed requires knowledge of the units for both time and distance. Since the distance is measured in meters (m) and the time is measured in seconds, the units in this example will be meters per second (m/s) (s).

That is speed = distance time. Alternatively, you can calculate the time by dividing the distance traveled by the speed. You can figure out the third input if you know two of the inputs.

Therefore,  For instance, if a car drives 120 miles (ca. 193 km) in 2 hours, we may calculate the speed as 120 × 2 = 60 miles per hour (ca. 97 km/h).

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12. Where is the Moon? If you see it, describe its location and appearance. ​

Answers

Do you mean in general or in a piece of paper?

Paul’s class investigated the effects of friction on the motion of a toy car. Using ramps with different surfaces, students determined the amount of time, in seconds (s), for the toy cars to reach the bottom of each ramp. All variables were controlled except the tested variable (independent variable). Paul's group concluded that toy cars on a sandpaper surface are fastest.

Answers

Answer:

C

Explanation:

..

Answer:The conclusion is valid for the data recorded

Explanation:

What’s the definition of friction

Answers

Answer:

Friction is a force that rubs on a object which then causes something within that object to happen. There are many types of friction, though.

Explanation:

brainliest? :{

what is the meaning of joule​

Answers

A joule is a unit of energy.

Answer:

The work done by a force of one Newton is known as joule

Explanation:

ons How many protons are in an atom of tin?
How many electrons are in an atom of tin?
How many neutrons are in an atom of tin? Round your
answer to the nearest whole number.

Answers

Answer:50,50,69

Explanation:I just did it

What was the caloric theory of heat?

Answers

Answer:Caloric theory, explanation, widely accepted in the 18th century, of the phenomena of heat and combustion in terms of the flow of a hypothetical weightless fluid known as caloric. ... The idea of an imaginary fluid to represent heat helped explain many but not all aspects of heat phenomena.

Explanation:

please give me brainliest....

what was Galleos contribution to the study of motion ?

Answers

Answer:

B ) He was the first to systematically study force and motion.

Explanation:

I seen this one before and know the answer since there's 4 options

Which action might lead scientists to develop new explanations about the universe?

Answers

Answer:

Designing experiments to replicate the conditions in which life may have first evolved on Earth

Explanation:

In 1953, Stanley L. Miller and Harold C. Urey conducted an experiment to prove that life started from inanimate objects. The research was conducted by utilizing proposed chemical substances, mixed together through a scientific design process. The outcome of the research is the predicted atmospheric conditions before the pre-living form started on earth.

Therefore, in this case, the action that might lead scientists to develop new explanations about the universe is "Designing experiments to replicate the conditions in which life may have first evolved on Earth."

You drive 200 miles in 3 hours before stopping for lunch and gas. After lunch you
travel 250 miles in an hour and a half What was your average speed in mi/hr)
for the trip

Answers

Given :

You drive 200 miles in 3 hours before stopping for lunch and gas. After lunch you  travel 250 miles in an hour and a half.

To Find :

Average speed.

Solution :

We know, average speed is given by :

[tex]v=\dfrac{\text{Total distance covered}}{\text{Total time taken}}\\\\v=\dfrac{200+250}{3+1.5}\ miles/hr\\\\v=\dfrac{450}{4.5}\ miles/hr\\\\v=100\ miles/hr[/tex]

Therefore, average speed of the journey is 100 miles/hr.

Hence, this is the required solution.

this is my question ​

Answers

Answer: left and applied force

Explanation:

A toy car is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.5 m/s2. What is the final velocity after 5.0 s?

a 21.6 m/s
b 19.2 m/s
c 17.5 m/s
d 24.5 m/s

Answers

Explanation:

v = u + at

v = 5 + 2.5 * 5

V ( final velocity after 5 sec) = 17.5 m/s

Question 2 Which of the following is NOT an example of a pure substance?

Answers

Answer: Image result for Which of the following is NOT an example of a pure substance? Examples of materials that are not pure substances.    

include gravelImage result for Which of the following is NOT an example of a pure substance?

Heterogeneous mixtures are not pure substances., your computer, a mixture of salt and sugar, and a tree.

The dimensions of a room are 16.40 m long, 4.5 m wide and 3.26 m high. What is the volume of the room in cubic meters? Express your answer in scientific notation.

Answers

Answer:

the volume of the room is 240.588 meters3

The picture shows the scientific notation

A runner decreases his velocity from 20 m/s to 10 m/s in 2.0 s.
What was his average acceleration?

Answers

Acceleration = change in velocity/change in time

So you should have (20-10)/(0-2)= -10/2 = -5

So your answer is -5

We have that the average acceleration is

[tex]a=5m/s^2[/tex]

From the Question we are told that

Decreases his velocity from 20 m/s to 10 m/s in 2.0 s.\

Generally the equation for the average acceleration  is mathematically given as

[tex]a=\frac{u-v}{t}\\\\a=\frac{20-10}{2}[/tex]

[tex]a=5m/s^2[/tex]

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Comprehension Questions:
1. True or false: even when your
research does not support your
hypothesis, the hypothesis has value.
0)
True
O False
No

Answers

True or False: Even when your research does not support your hypothesis, the hypothesis has value. It is True.

whats the average velocity

Answers

Answer:

A velocity is a vector unit, and average velocity can be described as the displacement divided by the time. The units for velocity can be understood from the definition to be meters/second or in common any distance unit over any time unit. The average speed of a body is described as the distance covered divided by the time elapsed.

Explanation:

the force of speed

Answer:

10 m/s

Explanation:

The average velocity is the slope of the graph.

m = (10 - 0)/(1 - 0)

m = 10/1

m = 10 m/s

What is the momentum of A 200 kg shark swimming at 15 m/s? bruh please help im failing and dont understand this:)

Answers

Answer:

p = 3000 kg-m/s.

Explanation:

Given that,

Mass of shark, m = 200 kg

Speed of the shark, v = 15 m/s

We need to find the momentum of the shark. It can be calcullated as follows :

p = mv

[tex]p=200\ kg\times 15\ m/s\\\\p=3000\ kg-m/s[/tex]

So, the momentum of the shrak is 3000 kg-m/s.

Urgent
Please write the complete answer

Answers

Multiply field strength (N/kg) by mass (kg) to get weight (N)

At the start, the car is carrying

4.7 kg * (9.8 N/kg) = 46.06 N

of fuel.

At the end, it is carrying

3.0 kg * (9.8 N/kg) = 29.4 N.

Assuming the car remains completely intact, its weight was reduced by

46.06 N - 29.4 N = 16.66 N.

Is kilometer less than, greater than, or equal to dekameter

Answers

Answer:

Less than

Explanation:

Because a dekameter has a higher vantage point than kilometer as a kilometer has a lower vantage point

Answer: a dekameter is actually 10 yrds while 1 kilometer is actually 4 to 5 miles

Explanation:

What is the density of a 200 gram mass whose volume is 300 cm?

Answers

Answer:

0.667 grams per cm cubed

Explanation:

the formula for density is mass divided by volume

A motorcycle is stopped at a traffic light. When the light turns green the motorcycle accelerates to a speed of 77 km/h over a distance of 50 m.
(a) What was the average acceleration of the motorcycle over this distance?
(b) Assuming the motorcycle maintained a constant acceleration, how far is it from the traffic light after 3.0 s?

Answers

Answer:

good luck

Explanation:

.....................

A cricket batsman hits a ball at a speed of 27m/s at an angle of 60 degrees to the horizontal. How far away would you have to stand in order to catch it (assuming you want to catch it just before it hits the ground)?

Answers

Answer:

64.4 m

Explanation:

First, find how long it takes to land.  Given in the y direction:

Δy = 0 m

v₀ = 27 m/s sin 60° ≈ 23.4 m/s

a = -9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

0 m = (23.4 m/s) t + ½ (-9.8 m/s²) t²

t = 4.77 s

Next, find how far it travels in that time.  Given in the x direction:

v₀ = 27 m/s cos 60° = 13.5 m/s

a = 0 m/s²

t = 4.77 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (13.5 m/s) (4.77 s) + ½ (0 m/s²) (4.77 s)²

Δx = 64.4 m

Texting and driving is a dangerous act
and is illegal in many areas. Suppose a driver takes 3.5 seconds to send a text. Travelling at 95 km/h, how far in meters did the vehicle travel while the driver was distracted? (Hint: How many seconds are in an hour?
How many meters are in a km?)

Answers

Answer:

s = 92.36 m

Explanation:

The distance covered by an object moving with uniform speed is given by the following formula:

s = vt

where,

s = distance covered by car during the time when driver was distracted in texting = ?

v = uniform speed of car = (95 km/h)(1 h/3600 s)(1000 m/1 km) = 26.39 m/s

t = time taken by the driver for texting = 3.5 s

Therefore, using these values in equation, we get:

s = (26.39 m/s)(3.5 s)

s = 92.36 m

WHY DONT TWO OBJECTS MOVE TOWARDS EACH OTHER DUE TO GRAVITATIONAL PULL BETWEEN THEM

Answers

Answer:

Although the gravitational force the Earth exerts on the objects is different, their masses are just as different, so the effect we observe (acceleration) is the same for each. The Earth's gravitational force accelerates objects when they fall. It constantly pulls, and the objects constantly speed up.

An engineering team has come to the stage in the engineering design
process in which it is iterating to improve the solution. What is one thing they
might be doing?
A. Identifying different sets of criteria and constraints to use for each
possible solution
B. Choosing one solution to model out of many possible solutions
the team has identified
C. Identifying the limits on how the prototype can be used to solve
the engineering problem
D. Making improvements to the original prototype in order to perform
more tests

Answers

Answer:

D. Making improvements to the original prototype in order to perform

more tests

Explanation:

just did it

The one thing that they might do is making improvements to the original prototype in order to perform more tests. Thus option D is correct.

What is prototype?

Prototype is defined as a type of early version, or initial release of a product created to test a theory or procedure.

It can be defined as a test procedure where design teams put concepts into concrete forms, whether they be paper or digital.

It can also be defined as a useful tool for the creation of new products. It provides the creative with the opportunity to watch their concept come to fruition.

There are three basic rule of prototyping.

Inquire as to who will gain.Fail frequently and early.Use show and ask instead of show and tell.

When the EGL system code does not have access to the function itself, a function prototype definition is used to provide type checking on function calls.

Thus, the one thing that they might do is making improvements to the original prototype in order to perform more tests. Thus option D is correct.

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Can someone help me its A,B,C,D

Answers

i think C i’m so sorry if i’m wrong tho.

What can you say about the motion of an object if its velocity time graph is a straight line parallel to the time axis

Answers

the velocity is constant .

Explanation:

it means its velocity and acceleration is constant. And there is no change in displacement , so the object is not moving.

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