Of force that depends on gravey.
can an ordinary object, like a skateboard, be weight-less? yes or no

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?