This page covers Agniveer Army GD Work, Energy & Power with complete concept notes, 12 graded practice MCQs, key points and exam-specific tips. Free to study.
A man pushes a box with a force of 50 N and moves it 10 m in the direction of the force. How much work is done on the box?
Practice 2easy
Which of the following is the SI unit of power?
Practice 3easy
A ball is thrown vertically upward with a velocity of 20 m/s. At its maximum height, what is its kinetic energy? (Take g = 10 m/s²)
Practice 4easy
A machine does 1000 J of work in 5 seconds. What is the power output of the machine?
Practice 5medium
A force of 20 N is applied on an object to move it 5 meters in the direction of the force. Calculate the work done.
Practice 6medium
An object of mass 2 kg is lifted vertically upward to a height of 10 meters. What is the gravitational potential energy gained? (Take g = 10 m/s²)
Practice 7medium
A vehicle of mass 1000 kg accelerates from rest to a velocity of 20 m/s. What is its kinetic energy at this velocity?
Practice 8medium
A machine does 5000 J of work in 10 seconds. What is the power output of the machine?
Practice 9medium
A ball is dropped from a height of 5 meters. Ignoring air resistance, at what velocity will it hit the ground? (Take g = 10 m/s²)
Practice 10hard
A worker lifts a load of 50 kg vertically upward through a height of 2 meters in 4 seconds. Calculate the power exerted by the worker. (Take g = 10 m/s²)
Practice 11hard
A body of mass 2 kg is moving with a velocity of 10 m/s. If the velocity is reduced to 5 m/s by applying a constant force, what is the change in kinetic energy of the body?
Practice 12hard
A force of 20 N is applied to an object at an angle of 60° to the direction of displacement. If the object moves 5 meters in the direction of force component, calculate the work done.