An archer pulls back the bowstring to prepare to shoot an arrow as shown below.

 

 

She uses an average force of 40 N, moving the bowstring 0.2 m. How much energy is stored in the bow?

The illustration below shows a car slowing down.

 

The car was initially traveling at 15 m/s. The car slows with a negative acceleration of 4.5 m/s². How long does it take the car to slow to a final velocity of 4.0 m/s?

Which of the following is certain to change as a ball accelerates?

 

The diagram below shows two aluminum spheres.

Aluminum sphere A contains a small negative charge and is touched by aluminum sphere B, which has a larger negative charge. Which of the following occurs next?

Two forces act on the 2 kg box shown below.

 

 

A 4-N force acts to the right and a 6-N force acts to the left. What is the net force acting on the box?