What magnitude impulse will give a 2.0-kg object a momentum change of magnitude +50 kg∙m/s?
A)+ 25 N∙s
B)- 25 N∙s
C)+ 50 N∙s
D)- 50 N∙s
E)+ 100 N∙s

Question

Quizplus · Accepted Answer

The impulse-momentum theorem states that the change in momentum of an object is equal to the impulse applied to it. Mathematically, this can be written as:

Impulse = (final momentum) - (initial momentum)

In this problem, the momentum change is given as +50 kg∙m/s. Since the object's initial momentum is zero (it starts from rest), the final momentum is simply +50 kg∙m/s as well. Plugging in these values into the impulse equation, we get:

Impulse = (50 kg∙m/s) - (0 kg∙m/s) = 50 N∙s

Therefore, the magnitude of the impulse required to give the object a momentum change of +50 kg∙m/s is +50 N∙s. The answer is (C).

What Magnitude Impulse Will Give a 2