Q14 of 25 Page 130

Two object A and B of mass m and 2m with velocity v and v/2 respectively. Which one will have greater inertia and greater momentum? Give reasons.

Object B has more mass and hence, have more inertia.

Momentum is defined as the product of mass and the velocity of the object.


Momentum of Object A = m × v = mv


Momentum of Object B = 2m × = mv


Momentum of both the objects is the same.


More from this chapter

All 25 →
12

A train starting from rest attains a velocity of 20m/sec in 2 minutes. Assuming that the acceleration is uniform find (i) the acceleration. (ii) distance travelled by train while it attained this velocity.

 13

If action is always equal to the reaction. Explain how a horse can pull a cart?

 15

Why does a boxer move his head backward when his opponent blows a punch?

 16

In which case the magnitude of acceleration will be greater when a car starts from rest or when the brakes are applied suddenly?