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 : Because the grass extends the time of the collision.

Explanation :

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

He had fewer injuries to the area of her body that hit the grass because the grass extends the time of the collision and hence it imparts less impulse.

i.e.

Where

F is the force

t is the time of collision

Hence, the correct option is (d) " The grass extends the time of the collision ".

talk back to him about the sport and show him your expertise or leave the room