Question

A physical quantity (m 3kg) is multiplied by a vector v
 such that p=mv. If v 2m / s
northward then the magnitude p is ____ and its direction is _____.

Answer 1

Given:

The mass of the body is m= 3Kg

The velocity of the body is v= 2 m/sec

To find:

The magnitude and its direction.

Solution:

The formula of momentum is

p=m.v

Now putting the above values we get,

p= 3×2

p=6 kg m/sec

The magnitude of p is 6 kg m/sec and its direction same in the northward.