If you have double the force and half the time over which the force acts, the resulting impulse .
Select one:
a. is halved
b. doubles
c. remains the same
d. increases four times

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?