A force of 15 N acts on an object for 3 seconds. What is the impulse of the force?
Correct: D
The impulse of the force can be calculated using the formula J = F * t, where J is the impulse, F is the force, and t is the time. Given F = 15 N and t = 3 seconds, we can calculate J = 15 * 3 = 45 Ns.