Home
Class 12
PHYSICS
When a force is applied on a moving body...

When a force is applied on a moving body, its motion is retarded. Then the work done is :

A

A)positive

B

B)negative

C

C)zero

D

D)positive and negative

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

When brakes are applied on a moving vehicle, it stops after travelling a distance. The distance is called stopping distance.Write an expressionof stopping distance in terms of initial velocity (u) and retardation (a).

When brakes are applied on a moving vehicle, it stops after travelling a distance. The distance is called stopping distance. If the initial speed is doubled keeping the retardation same, by how much will the stopping distance change?

m_1 and m_2 are the masses of two bodies. When a force of 5 N is applied on each body, m_1 gets an acceleration of 10 m//s^2 and m_2 , 20 m//s^2 . If the two bodies are tied together and the same force is applied, find the acceleration of the combined system.

A constant force is applied for 2 s on a body of mass 5kg. As a result, if the velocity of the body is changed from 3m/s to 7m/s, find out the value of the applied force.