First slide

Second law

Question

A body is projected vertically upwards. Its momentum is gradually decreasing. In this

Moderate

A

it is a violation of law of conservation of linear momentum
B

momentum of the body alone gets conserved
C

momentum of the body, earth and air molecules together remains constant
D

violates law of conservation of energy

Solution

The body collides with the air molecules and it also interacts with the earth.So the resultant external force acting on the system consisting of the projectile, air molecules and the earth is zero and momentum of the system remains conserved.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App