Question

An object with a mass of 120 kilograms is moving at a velocity of 30 m/s. What's its momentum?

A. 3,600 m/s/kg
B. 0.25 kg-m/s
C. 3,600 kg-m/s
D. 4 kg-m/s

Answer 1

I believe the correct answer is A

Answer 2

The momentum of the object is 3600 kg m/s.

Answer: Option C

Explanation:

Momentum is the measure of motion done by an object. It is a vector quantity. It is defined as measure of velocity at which object is moving. So the momentum is found to be directly proportional to product of mass (m) of the object and velocity attained by the object. Thus,

                      $\text {Momentum of the object} = m \times \text { Acceleration }$

As the mass of the object is given as 120 kg and the velocity attained by the object is 30 m/s, then the momentum of the object will be

                     $\text {Momentum of the object} = 120 \times 30 = 3600 \mathrm{kgm} / \mathrm{s}$

So, the momentum of the object is 3600 kg m/s.