Potential energy is sometimes called?

Rohit is trying to tune an instrument

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)