Circle the letter of each sentence that is true about impulse and momentum:

a. When jumping from an elevated position down to the ground, you should keep your legs stiff to decrease the momentum.

b. A wrestler thrown to the floor should extend his time hitting the mat by relaxing his muscles and spreading the impulse to his foot, knee, hip, ribs, and shoulder.

c. When a boxer gets punched, she should move her head away from the punch to increase the contact time and reduce the force.

d. A dropped dish is more likely to survive a fall on carpet rather than concrete, because the softness of the carpet leads to increased contact time.