A student drops three balls of identical size but different masses from one meter high into a container of sand. The first ball has a mass of one gram.
The second ball has a mass of three grams.
The third ball has a mass of five grams.
Joe: The ball with a mass of 1 gram will create the biggest crater
Abby: The balls will all create the same size crater
Angel: The ball with a mass of 5 grams will create the biggest crater
Which ONE student do you agree with from above? Explain why you agree with that student.
in your answer be sure to include how mass relates to kinetic energy.
(1pt for naming the correct student, 1 pt for explaining the relationship between mass and Kinetic energy

Aball is thrown upward. at a height of 10 meters above the ground, the ball has a potential energy of 50 joules (with the potential energy equal to zero at ground level) and is moving upward with a kinetic energy of 50 joules. what is the maximum height h reached by the ball? consider air friction to be negligible. 1. h ≈ 10 m 2. h ≈ 50 m 3. h ≈ 30 m 4. h ≈ 40 m 5. h ≈ 20 m 003 10.0 points which of the two object shown below has the greatest kinetic energy? a m b 1 2 m v 2v 1. kinetic energies are the same. 2. a 3. b 4. unable to determine. 004 10.0 points tim, with mass 74.6 kg, climbs a gymnasium rope a distance of 3.1 m. the acceleration of gravity is 9.8 m/s 2 . how much potential energy does tim gain? answer in units of j. 005 10.0 points a car is moving at 64 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when it moves at 111 miles per hour? answer in units of j. 006 10.0 points an 102 kg man climbs up a 1 m high flight of stairs. the acceleration of gravity is 9.81 m/s 2 . w

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