When you catch a baseball with a glove (instead of your hand), the glove helps by increasing the
of the collision.
a. time
b. Force
c. momentum
d. Impulse

Which one of the following research methods can show cause and effect

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.