Physics

can someone please help me answer this in the next 15 minutes. ill give a brainiest to whoever can help me. tysm if u do!! :))
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Emmy kicks a soccer ball up at an angle of 45 over a level field. She watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. Assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. Consider only the time that the ball is in the air, after being kicked but before landing. Take "north" and "up" as the positive x and y directions, respectively, and use g10 m/s2 for the downward acceleration due to gravity.
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If an object is thrown down with force from the top of a building, at a speed of 20.0 m/s, and it hits the ground witha speed of 40.0 m/s.
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A model rocket is launched from the ground. It starts from rest and accelerates upward at 15.0 m/s2 for 3.00 s. Disregard gravity. What is the V2? b. Then, it has a downward acceleration of -10.0 m/s2 until it reaches its highest point. What is the highest above the ground that the rocket gets? c. What is the TOTAL time in the air?
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MULTIPLE CHOICE QUESTIONWhat is the acceleration of the object?(Remember a = Fnet/m and acceleration needs adirection)8 m/s/s0.125 m/s/s to the right8 m/s/s to the left8 m/s/s to the right
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An Alaskan rescue plane traveling 46 m/s drops a package of emergency rations from a height of 101 m to a stranded party of explorers. The acceleration of gravity is 9.8 m/s^2. Where does the package strike the ground relative to the point directly below where it was released? Answer in units of m.
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I will give you branilest!
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When there are equal forces from opposite directions acting on an object, the forces are said to be which of the following? (4 points)A.PositiveB.NegativeC.BalancedD.Gravitational
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How much heat is released by 38 gram sample of water to freeze
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electromagnetic waves and sound waves can have the same frequency. what is the wavelength of a 1.00kHz electromagnetic wave
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Which form of friction produces the least amount of force?rolling frictionsliding frictionfluid frictionstatic friction
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Two cars are traveling on a desert road between three consecutive poles, as shown in thefigure. After 5.1 s, they are side by side at thenext telephone pole. The distance betweenthe poles is 72.7 m.1-Find the displacement of Car A after 5.1 s.(answer in units of m.)2-Find the average velocity of Car A during 5.1s. (answer in units of m/s.)
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In the heart, what separates the oxygenated and deoxygenated blood?A. VentricleB. VesselC.septum D.atrium
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Water is formed when two hydrogen atoms bond to an oxygen atom. The hydrogen and the oxygen in this example are different
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please help! newton's laws. please give a legit answer
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Consider the following debate between two students about their answer to the above question. Student 1: I thought that whenever one object exerts a force on a second object, the second object also exerts a force that is equal in strength, but in the other direction. So even though Earth is bigger and more massive than the Moon, they still pull on each other with a gravitational force of the same strength, just in different directions. Student 2: I disagree. I said that Earth exerts the stronger force because it is way bigger than the Moon. Because its mass is bigger, the gravitational force Earth exerts has to be bigger too. I think you are confusing Newton's third law with the law of gravity. Do you agree or disagree with either or both of the students?
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When walking barefoot, Kevin can walk across the grass easily, but when he crosses the paved street, the street is hot and burns his feet. At the beach he walks quickly across the hot sand to the cool water. Why do some substances feel hot to his feet and others do not? Radiation is heat transfer through waves. Specific heat is the amount of energy required to raise the temperature of a substance 1 degree C.
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Rock X is released from rest at the top of a cliff is on earth. A short time later, Rock y is released from rest from the same point as rock X. Both rocks fall for several seconds before landing on the ground directly below the cliff. Frictional forces are considered to be negligible. Which of the following graph correctly shows the vertical velocity of rock X as a function of time? Take the positive direction to the upward.
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A race car driver travelling at 15m*s^-1 accelerates at a constant value for 10.0s. She is now driving at a speed of 35 m*s^-1 What was her acceleration? Give your answer in m*s^-2 to one significant figure . Do not include units with your answer.
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the energy transferred by a force of a moving object
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Helpppp guys plsss help !
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why would it motivate Hollywood to use more realism in special effects?
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The density of the Earth is greater than the density of an equal volume of water by _____.5 times3 times1 times7 times
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List 2 examples of physical properties that don'tchange if the sample size changes.
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