A ball is thrown straight up.
What will be the instantaneous velocity at the top of its path??? What will be its acceleration at the top????
Why will answers be different???
2007-01-29 12:55:08 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
STMC is right. When the ball reaches the highest point, there is an instant where its up-down velocity is 0 (because it changes direction). However, the acceleration from gravity is acting on all objects on earth always, moving or not.
2007-01-29 13:24:52 · answer #1 · answered by lango77 3 · 0⤊ 0⤋
when it reaches the highest point, its velocity at that time is 0m/s. However, acceleration is still -9.8m/s^2.
i'm 100% sure on this, because i put down 0m/s^2 for acceleration on the test and that was wrong.
acceleration means changing velocity over time.
all though, its velocity i 0m/s, acceleration is still constant. That means, the next second, its velocity will be -9.8m/s
2007-01-29 21:09:23 · answer #2 · answered by 7 · 0⤊ 0⤋
both answers are 0. answers will be different because some people will get it correct, i.e. you, and some people will get it wrong.
2007-01-29 20:59:51 · answer #3 · answered by Anonymous · 0⤊ 1⤋