denise is riding her bike and falls to the ground. during the collision, she hits both grass and cement…

denise is riding her bike and falls to the ground. during the collision, she hits both grass and cement. which best explains why denise had fewer injuries to the area of her body that hit the grass? the grass did not exert a reaction force. the grass did not exert an action force. the grass shortens the time of the collision. the grass extends the time of the collision.

denise is riding her bike and falls to the ground. during the collision, she hits both grass and cement. which best explains why denise had fewer injuries to the area of her body that hit the grass? the grass did not exert a reaction force. the grass did not exert an action force. the grass shortens the time of the collision. the grass extends the time of the collision.

Answer

Brief Explanations:

According to the impulse - momentum theorem (J = F\Delta t=\Delta p). When Denise hits the grass, the grass is more yielding than cement. It extends the time (\Delta t) of the collision for the same change in momentum (\Delta p). Since (F=\frac{\Delta p}{\Delta t}), a longer (\Delta t) results in a smaller average force (F) acting on her body, reducing the injuries.

Answer:

The grass extends the time of the collision.