Home
Class 11
PHYSICS
A block of mass 2.00 kg moving at a spee...

A block of mass 2.00 kg moving at a speed of 10.0 m/s accelerates at 3.0 `m/s^2` for 5.00 s. Compute its final kinetic enegy.

Text Solution

Verified by Experts

The correct Answer is:
B

`M_b=2kg,u=10m/sec`
`a=m/sec^2,t=5sec`
`v=u+at`
`=10+3xx5=25 m/sec`
`:. FiN/Al K.E. =1/2 mv^2`
`=1/2xx2x625=625J`
Promotional Banner

Similar Questions

Explore conceptually related problems

What is the de Broglie wavelength of (a) a bullet of mass 0.040 kg travelling at the speed of 1.0 km//s , (b) a ball of mass 0.060 kg moving at a speed of 1.0 m//s, and (c) a dust particle of mass 1.0 xx 10^(-9) kg drifting with a speed of 2.2 m//s ?

What is the de-Broglie wavelength of (a) a bullet of mass 0.040 kg travelling at the speed of 1.0 km/s, (b)a ball of mass 0.060 kg moving at a speed of 1.0 m/s and (c )a dust particle of mass 1.0xx10^(-9) kg drifting with a speed of 2.2 m/s

A block of mass 0.50kg is moving with a speed of 2.00m//s on a smooth surface. It strikes another mass of 1 kg at rest and they move as a single body. The energy loss during the collision is

For a ball of mass 0.12 kg and moving with speed of 20 m/s .Calculate de-Broglie wave length.

A bullet of mass 0.04 kg moving with a speed of 90 m s^(-1) enters a heavy wooden block and is stopped after a distance of 60 cm. What is the average resistive force exerted by the block on the bullet?

A sphere of mass 50 g moving with velocity of 10m/s collide with the rest block at mass 950 g and embeded . The kinetic energy lost by sphere will be …….

A block of mass 10 kg, moving with acceleration 2m//s^(2) on horizontal rough surface is shown in figure then find the value of frictional coefficient.

A block of mass 2.0 kg is given an initial speed along the floor towards a spring as shown. The coefficient of kinetic friction between the floor and the block is 0.4 and force constant of the spring is 5.6xx10^(3) N/m. The block compresses the spring by 10cm before it stops for a moment. What is the initial speed (m/s) of the block?

A constant force acting on a body of mass 3.0 kg changes its speed from 2.0 m s^(-1) to 3.5 m s^(-1) in 25 s. The direction of the motion of the body remains unchanged. What is the magnitude and direction of the force ?

A body of mass 10kg is moving with a constant velocity of 10m//s . When a constant force acts for 4 seconds on it, it moves with a velocity 2m//sec in the opposite direction. The acceleration produced in it is