Question

The force acting on a body is (i+4j+6k)N in a time of 6 seconds. The change in momentum of the body is (Kgms-1)

Answer 1

Answer:

43.68 kg m / sec

Explanation:

Given :

F = ( i + 4 j + 6 k ) N

Magnitude of F = √ ( 1² + 4² + 6² ) N

= > F = √ 53 N

Time t = 6 sec

We know :

Rate change of momentum = Force × time

Putting vales here we get :

Rate change of momentum ( dP ) = √ 53 N × 6 sec

Rate change of momentum ( dP ) = 7.28 × 6  kg m / sec

Rate change of momentum ( dP ) = 43.68 kg m / sec

Hence we get required answer.