Tricky Physics Problem?

Question

A 60Kg object is moving at 20m/s when a force brings the object to rest in 0.050 seconds. If the same object moving at the same initial speed was brought to rest in 0.50 seconds, then the required force would be__, the resulting impulse would be__ and the resulting momentum change would be__. List all three answers in order



a. the same as the original value
b. two times the original value
c. ten times the original value
d. one-half of the original value
e. one-tenth or the original value
f. None of these choices feel this blank

Answer 1

e. because a=dV/dt if dt is 10 times higher then acceleration is 10 times lower, so force is one-tenth. (F=ma)

Answer 2

Hi. e, c, a. Only a guess (with thought).