Home
Class 12
PHYSICS
The graph between the resistance force F...

The graph between the resistance force F acting on a body and the distance covered by the body is shown in the figure. The mass of the body is 25kg and initial velocity is `2 m//s^(2)`. When the distance covered by the body is 4m, its kinetic energy would be

A

50 J

B

40 J

C

20 J

D

10 J

Text Solution

Verified by Experts

The correct Answer is:
D
Initial KE of the body `=(1)/(2)mv^2=(1)/(2)xx25xx4=50J`
Work done against resistive force
`=` Area between F-x graph
`(1)/(2)xx4xx20=40J`
final KE`=`initial KE`-`work done against resistive force
`=50-40=10J`
Promotional Banner

Similar Questions

Explore conceptually related problems

A body starts with an initial velocity of 10 ms and acceleration 5 ms. Find the distance covered by it in 5 s.

A body starts from rest with a uniform acceleration of 2 m s^(-1) . Find the distance covered by the body in 2 s.

For body of 50 kg. mass, the velocity time graph is shown in figure. Then force acting on the body is :-

The kinetic energy of a body moving along a straight line varies with time as shown in figure. The force acting on the body:

The velocity-time graph of a body is shown below. The displacement covered by body in 5 s is

If the force acting on a body is inversely proportional to its speed, the kinetic energy of the body is

A machine delivers power to a body which is proportional to velocity of the body. If the body starts with a velocity which is almost negligible, then the distance covered by the body is proportional to

In a force of 9 N is acting on a body, then find instataneous power supplied to the body when its velocity is 5m/s in the direction of force

The force acting on a body is inversely proportional to the distance (x) covered. The work done is proportional to

The initial velocity of a body moving along a straight lines is 7m//s . It has a uniform acceleration of 4 m//s^(2) the distance covered by the body in the 5^(th) second of its motion is-