Which best describes the speed of a ball as it is thrown straight up into the air and comes back down?
A The ball goes up at a constant speed, stops, then comes down at a constant speed.
B The ball goes up at a constant speed, stops, and increases speed as it comes down.
C The ball goes slower and slower as it goes up, stops, and then goes faster and faster as it comes down.
D The ball goes slower and slower as it goes up, stops, and then comes down at a constant speed.

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Answers

2014-09-17T10:28:27+08:00
It is letter C
because that is free fall the first acceleration that comes up is  against the acceleration due to gravity that comes down thats why it goes up slower and when the first acceleration is equilibrium to the acceleration due to gravity the object stop for a moment then because of its mass and gravity it comes down. and it is fast to fall because of acceleration due to gravity
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