If a ball has 300 Joules of potential energy at its highest point, Then the kinetic energy is the same at that point i.e exactly 300 Joules. The correct option is (C).
What are kinetic and potential energy?When a body has a mass of m kg and travels a velocity of v m/s then the kinetic energy is given by,
KE=1/2mv²
And when a body is at a height of h meter from the ground and the mass of the body is m kg, then the potential energy is given by,
PE= mgh
Where g= acceleration due to gravity= 9.81m/s²
At The highest point, the kinetic energy is equal to the potential energy.
i.e at the highest point,
KE=PE
Hence If a ball has potential energy at the highest point is 300J that means the kinetic energy at the point is the same i.e 300J.
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In a free body diagram all the forces are depicted as pointing _______ the central box
Answer:
There are three forces acting upon the system - the gravity force (the Earth pulls down on the 15.0 kg of mass), the normal force (the floor pushes up on the system to support its weight), and the applied force (the hand is pushing on the back part of the system).
Explanation:
Answer:
what he said
Explanation:
what is the correct equation for calculating kinetic energy?
1. kinetic energy = potential energy - total energy
2. kinetic energy = total energy - potential energy
3. kinetic energy = 1/2 x (total energy + potential energy)
4. kinetic energy = potential + total energy
Answer:
2. kinetic energy = total energy - potential energy
Explanation:
The total energy of a system is the addition of kinetic and potential energy of the system. Kinetic energy can be regarded as form of energy posses by an object when it's in motion
Total energy = kinetic energy + potential energy
(If we make Kinectic energy the subject of the formula, we have)
kinetic energy = total energy - potential energy
Explain why white light splits up into the different colours when it goes through a prism
Answer:
Light splits up into different colors because of the electromagnetic spectrum which makes the light bend, wavelength, and it makes different colors by it :3
Explanation:
:3
The pressure at the bottom of a lake is 300 000 N/m2 more than at the surface of the lake. The lake is fresh water (density = 1000 kg/m3).
Answer:
h = 30.61 m
Explanation:
In this problem they indicate the pressure at the bottom of the lake and the density of the water, for which they must ask what is the depth of the lake.
The pressure is given by the expression
P = [tex]P_{atm}[/tex] + rho g h
P - P_{atm} = rho g h
The gauge pressure value is P- P_{atm} = 3 105 N / m²
h = [tex]\frac{P - P_{atm}}{ \rho \ g}[/tex]
let's calculate
h = [tex]\frac{3 \ 10^5}{1000 \ 9.8}[/tex]
h = 30.61 m
Calculate the momentum of a 1000 kg sports car traveling at 30 m/s.
Answer:
30,000 kgm/s
Explanation:
m = 1000 kg
v = 30 m/s
Plug those values into the equation:
p = mv
p = (1000 kg)(30 m/s)
p = 30,000 kgm/s
The momentum of a 1000 kg sports car traveling at 30 m/s is 30,000 kgm/s.Linear momentum = Mass x Speed.
What is the momentum?The product of an object's mass, m, and its velocity, v, is the vector quantity known as linear momentum. It is represented by the letter "p," which is also used to denote momentum.
Mass of car = 1000 kg
Speed by which car moves = 30 m/s. The momentum of the car =?
Recall that:
Linear momentum = Mass x Speed
= 1000 kg x 30 m/s.
= 30,000 kgm/s
The sum of an object's mass (m) and velocity (v) is known as the object's linear momentum. An equation can be used to explain this relationship. Momentum is defined as the body's mass times its velocity. P = m times v, etc.
Therefore, the momentum of a 1000 kg sports car is 30,000 kgm/s if travels at 30 m/s.
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Four resistors , R1=12ohms, R2= 15 ohms , R3= 18 ohms and R4=10 ohms are connected to 6 v battery in series what is the total resistance in the circuit?
Answer:
55 ohms
Explanation:
if it was series circuit, then you just need to add all the resistances
A chemical reaction is the only way to an
A: Element
B: Pure Substance
C: Mixture
D: Solution
Answer:
B: Pure Substance
Explanation:
please can someone please help me with this!!
i’ll give 15 points!!
Answer:
Explanation:
Time is a major factor in how much force is being applied. so when there are crumple zones. they crumple and that takes a little longer in an impact and hence lowers the forces considerably :) safety first
When the north poles of two magnets are kept close , they will __________
attract
rotate
repel
remain unaffected
a rail car moving at 10m/s collides with and connect to another stationary car. What is their final velocity?
Assume they have the same mass
Answer:
read this it might help some
When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.
Explanation:
20 A measure of the speed and direction of an object's motion
a. velocity
b. speed.
c. momentum
Help ASAP I’ll give u branliest!! This isn’t really hard
Answer:
I'm pretty sure it's mist, drizzle, droplet, and then rain.