The unit of work is joule. The other physical quantity that has same unit is
Correct Answer: 3
The spring will have maximum potential energy when
Correct Answer: 3
The energy possessed by an oscillating pendulum of a clock is
Correct Answer: 4
The gravitational potential energy of an object is due to
Correct Answer: 4
A ball is dropped from a height of 10 m.
Correct Answer: 3
If the velocity of a body is doubled its kinetic energy
Correct Answer: 4
How much time will be required to perform 520 J of work at the rate of 20 W?
Correct Answer: 4
A students caries a bag weighing 5 kg from the ground floor to his class on the first floor that is 2 m high. The work done by the boy is
Correct Answer: 3
No work is done if
Correct Answer: 4
Which is the type of collision in which both the linear momentum and the kinetic energy of the system?remain conserved?
Correct Answer: 2
Find the potential energy stored in a ball of mass 5 kg placed at a height of 3 m above the ground.
Correct Answer: 2
An electric heater of rating 1000 W is used for 5 hrs per day for 20 days. What is the electrical energy?utilized?
Correct Answer: 1
The rate of doing work is called____________.
Correct Answer: 3
A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is
Correct Answer: 2
The potential energy of a system increases if work is done
Correct Answer: 2
If a light body and heavy body have same kinetic energy, then which one has greater linear momentum?
Correct Answer: 2
A light and a heavy body have equal momentum. Which one has greater K.E.?
Correct Answer: 1
Unit of energy is
Correct Answer: 4
Which of the following is not a conservative force?
Correct Answer: 2
The speed of an object of mass m dropped from an inclined plane (frictionless), at the bottom of the plane,?depends on:
Correct Answer: 1
A body projected vertically from the earth reaches a height equal to earth's radius before returning to the?earth. The power exerted by the gravitational force is greatest
Correct Answer: 1
If two particles are brought near one another, the potential energy of the system will
Correct Answer: 1
When two spheres of equal masses undergo perfect inelastic collision with one of them at rest, after?collision they will move
Correct Answer: 3
The rate of doing work is called
Correct Answer: 3
Which is the type of collision in which both the linear momentum and the kinetic energy of the system remain conserved?
Correct Answer: 2
Collision between marble balls is which type of collision?
Correct Answer: 2
The energy possessed by the body by virtue of its motion is known as?
Correct Answer: 4
Find the potential energy stored in a ball of mass 5 kg placed at a height of 3 m above the ground.
Correct Answer: 2
What is the power utilised when work of 1000 J is done in 2 seconds?
Correct Answer: 4
Which one has higher kinetic energy? Both light and heavy bodies have equal momenta.
Correct Answer: 2
An electric heater of rating 1000 W is used for 5 hrs per day for 20 days. What is the electrical energy utilized?
Correct Answer: 1
A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is
Correct Answer: 2
The energy held by an object due to its motion is
Correct Answer: 2
Kinetic Energy is
Correct Answer: 2
In a demonstration, a sharp-shooter fires a bullet of mass 50.0 g with speed 200 m s-1 on soft plywood of thickness 2.00 cm. The bullet comes through the wood with only 10% of its initial kinetic energy. What is the speed of the bullet when it comes out of the plywood?
Correct Answer: 3
How fast would a 1 kg bowling ball travel if it had the same kinetic energy as that of the elephant provided the mass of the elephant is 6000 kg and velocity given is 10 m/s?
Correct Answer: 2
The energy possessed by a body due its position is?
Correct Answer: 2
Scalar Product is
Correct Answer: 3
Scalar Product is
Correct Answer: 3
Scalar product obeys the distributive law which means?
Correct Answer: 1
Work is expressed as:
Correct Answer: 1
Potential and Kinetic energy are:
Correct Answer: 1
Power is expressed as
Correct Answer: 1
Energy involved in creating work
Correct Answer: 2
An object with weight of 100 N is kept at a height of 15m. Find the Potential Energy of the object at that height.?
Correct Answer: 1
The work done by a body is 50 kJ, which it attains while reaching a height of 5 m. By what difference has the energy of the body changed?
Correct Answer: 1
A cricket ball having 7 kg of mass which is moving with a velocity of 20 m/s covers a height of 8.75 m vertically. Calculate the work done in J? Assume g = 10 m/s2.
Correct Answer: 1
Work done is the scalar product of
Correct Answer: 1
The energy held by an object due to its motion is
Correct Answer: 1
Ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is
Correct Answer: 3
An object is moving with a constant velocity. What can be said about the net force acting on the object?
Correct Answer: 1
If a force of 10 N is applied to an object causing it to move 10 meters in the direction of the force, what is the work done on the object?
Correct Answer: 2
An object of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?
Correct Answer: 2
A car accelerates from rest to 20 m/s in 10 seconds. What is its average power output if the car has a mass of 1000 kg?
Correct Answer: 4
If an object is lifted vertically against the force of gravity, which of the following quantities does not change?
Correct Answer: 4