Identify the situations that have an unbalanced force. Check all that apply. 1. A weight speeds up as it falls through the air

2. A garbage can is at rest on the ground

3. A hockey puck moves in a straight line at a constant speed

4. A bumper hit by another car moves off at an angle

5. A balloon flies across the room when the air is released

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)