In attempting to pull a 1500-kg car out of a ditch, Arnold exerts a force of 300 N for three seconds, Bob exerts a force of 500 N for two seconds, and Cecil exerts a force of 200 N for four seconds. Who provided the greatest impulse?
A) Arnold
B) Bob
C) Cecil

Question

Quizplus · Accepted Answer

Impulse is defined as force multiplied by the time it is applied. In this case, the impulse provided by Arnold is 300 N x 3 sec = 900 Ns. The impulse provided by Bob is 500 N x 2 sec = 1000 Ns. Finally, the impulse provided by Cecil is 200 N x 4 sec = 800 Ns. Therefore, Bob provided the greatest impulse.

In Attempting to Pull a 1500-Kg Car Out of a Ditch