- #1
nivush1991
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1. The problem statement
This is the bouncing ball lab. My question is when and why is the sign (-/+) different in the acceleration of gravity and the bouncing ball.
For example when the ball was in the air, it's acceleration was approx. 10 m/s2, which is very close numerically to the acceleration of gravity which is -9.8 m/s2. but why are the signs different. why is the acceleration of the ball positive if the accelereation of the force that's pulling the ball down (gravity) negative?
thank you
This is the bouncing ball lab. My question is when and why is the sign (-/+) different in the acceleration of gravity and the bouncing ball.
For example when the ball was in the air, it's acceleration was approx. 10 m/s2, which is very close numerically to the acceleration of gravity which is -9.8 m/s2. but why are the signs different. why is the acceleration of the ball positive if the accelereation of the force that's pulling the ball down (gravity) negative?
thank you