A body is acted upon by a force 25 N acquires of 2.5 ms-2 and covers a distance of the force. If the body starts from rest, the Kinetic energy acquired by it is?
A freely falling body during its fall will have
A boy climbs on to a wall that is 3.4 m high and gains 2250 J of potential energy. What is the mass of the boy? Take g = 9.8 m/Sec2
A body of mass 4 kg has a momentum of 25 kg m/s, its K.E. is:
What happens to K.E. of a body when 3/4 th of mass is removed and its velocity is doubled?
Elastic potential energy of a body can be achieved by
If the velocity of a moving car is halved, its kinetic energy would
Kinetic Energy = (1/2) mv2.
If the velocity of a body is halved, its kinetic energy becomes one fourth as kinetic energy is directly proportional to velocity squared.
A fish with weight 35 kg dives and hits the ground (zero height) with kinetic energy equal to 3500J. Find the height through which fish dived. Take g = 10 m/s2
Which of the following is not an example of potential energy?
How fast should a person with mass 50kg walk so that his kinetic energy is 625 J ?
K.E = 0.5mv²
v = √(2K.E / m)
= √(2 × 625 Joule / 50 kg)
= √(625 Joule / 25 kg)
= 5 m/s...
The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:
Two bodies of masses m and 4 m are moving with equal kinetic energy. The ratio of velocities with which they are traveling is :
If the speed of an object doubles, its kinetic energy becomes
If two bodies of different masses have the same K.E. then the relation between momentum and mass will be:
1 J is the energy required to do ____ of work.
A body of mass 44 kg is moving at a velocity of 10 m/s is brought to rest in 10mins, the work done is:
For an object to have gravitational potential energy only, it must be
A body at rest cannot have:
Potential energy is energy possessed by an object due to its
Which of the following produces energy because of temperature difference at various levels in ocean.