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8090 [49]
3 years ago
9

HELP ASAP PLEASE!!! WILL MARK BRAINLIEST, ONLY ANSWER IF YOU'RE SURE

Chemistry
2 answers:
krok68 [10]3 years ago
7 0

1. dropping the ball converts potential energy PE to kinetic energy KE. when ball hits ground, it bounces back up. KE is converted back to PE at dat pt. cuz' ball bounces back almost up 2 ur hand, the PE is almost conserved.

2. energy changes with ball as it is accelerated by gravity. the increase in velocity converts ball's PE to its KE.

3. two changes in speed n position: first during drop of ball. speed from zero at hand postion to its max at ground position. second during the bounce back. speed from max at ground poisiton to zero at almost hand position.

GalinKa [24]3 years ago
5 0

1. As you drops a ball, its potential energy is converted into kinetic energy during its fall. It moves faster and faster as more PE is converted into KE until the ball hits the ground.

2. The conversion from PE to KE is due to the work done by gravity acceleration. As the ball is accelerated by gravity towards ground, its PE is converted to KE.

3. Total energy of the ball is conserved. Its position changes as it gets closer to the ground. Its PE decreases as its speed and hence KE increases until it hits the ground.

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