Question

A 60-kg gymnast is moving with a speed of 12.0 m/s when she lands on the ground during an event. If she bends her knees upon contact with the ground, then she will increase the time of collision by a factor of 20 - compared to if she keeps her knees stiff. What affect does this have upon the force and the impulse that she experiences? Mark all that apply a. Bending her knees will make the force 20 times greater. b. Bending her knees will make the force 20 times smaller. c. Bending her knees will make the impulse 20 times greater. d. Bending her knees will make the impulse 20 times smaller. e. Bending her knees will have no effect upon the impulse she experiences.

          A 60-kg gymnast is moving with a speed of 12.0 m/s when she lands on the ground during an event. If she bends her knees upon contact with the ground, then she will increase the time of collision by a factor of 20 - compared to if she keeps her knees stiff. What affect does this have upon the force and the impulse that she experiences? Mark all that apply

a. Bending her knees will make the force 20 times greater.
b. Bending her knees will make the force 20 times smaller.
c. Bending her knees will make the impulse 20 times greater.
d. Bending her knees will make the impulse 20 times smaller.
e. Bending her knees will have no effect upon the impulse she experiences.

A 60-kg gymnast is moving with a speed of 12.0 m/s when she lands on the ground during an event. If she bends her knees upon contact with the ground, then she will increase the time of collision by a factor of 20 - compared to if she keeps her knees stiff. What affect does this have upon the force and the impulse that she experiences? Mark all that apply

a. Bending her knees will make the force 20 times greater.
b. Bending her knees will make the force 20 times smaller.
c. Bending her knees will make the impulse 20 times greater.
d. Bending her knees will make the impulse 20 times smaller.
e. Bending her knees will have no effect upon the impulse she experiences.

Added by Ashley M.

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