As a ball falls, consider one force to be the pull of the earth on the ball. What is the pair to this force? the pull of the ball on the earth? non-existant in this case. air resistance acting against the ball. or none of the above.

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

Explain why electric current cannot exist if a current doesn't have a voltage source.

Where should a carbon monoxide detector be mounted?