Force and Press...

A spring scale reads 20 newtons as it pulls a 1 kg mass across a table. What is the magnitude of the force exerted by the mass on the spring scale?

Three blocks of masses, i.e. M₁ = 1 kg, M₂ = 2 kg and M₃ = 3 kg are in contact with each other on a frictionless horizontal surface as shown in the figure. What is the horizontal force 'F' needed to push the blocks as one unit with an acceleration of 2 ms^–2?

A force acts for 5 s on a stationary body of mass 200 kg after which the force ceases to act. The body moves through a distance of 20 m in the next 2 s. What is the magnitude of force applied?

A force acts for 4 s on a body of mass 3.2 kg initially at rest. The force then ceases to act and the body moves through a distance of 4 m in the next second. What is the magnitude of the force?

An object of mass 300 g is resting on a frictionless table. Calculate the acceleration of the object when it is acted upon by a force of 0.03 N.

A force of 20 N acts on a body of mass 4 kg for 6 s initially at rest. What is the velocity acquired by the body and the change in momentum of the body?

A car of mass 500 kg moving at a speed of 108 km/h is stopped in 20 s. What is the force applied by the brakes?

A car is moving with a uniform velocity 60 ms^-1. It comes to rest in 4 s by applying a force of 3000 N. What is the change in the momentum of the car?

Two people push a car for 4.8 s with a combined net force of 100 N. What is the impulse provided to the car?

An object A of mass 3 kg is moving with a velocity of 3 ms^–1 and collides head on with an object B of mass 2 kg moving in opposite direction with a velocity of
2 ms^–1. After the collision, both the objects stick and move with a common velocity. What is the velocity of the objects after the collision?

Impulse provided when 1 N force is applied for 1 s on a body is equal to

Force of friction on an object lying on a table is 29.4 N. What is the mass of the object if the coefficient of friction between the object and the table surface is 0.3?

A bullet of mass 50 g is horizontally fired with a velocity of 200 ms^–1 from a pistol of mass 4 kg. What is the magnitude of recoil velocity of the pistol?

Two balls A and B of masses 2 kg and 3 kg are moving with velocities 3 ms^–1 and 2 ms^–1 respectively, towards each other. During the collision, they stick together. What will be the velocity of the combined balls after the collision?

A ball of mass 200 g is moving with a velocity of 6 ms^–1. It is brought to rest after travelling a distance of 2 m by applying a resistive force. What is the value of the resistive force applied?

An applied force of 24 N [forward] causes a steel block to move across a horizontal greased steel surface. What is the approximate value of mass of the block?
(Take coefficient of friction = 0.15) (g = 9.8 m/s²)

A force causes an acceleration of 15 ms^–2 in a body of mass 300 g. What acceleration will be caused by the same force on a body of mass 5 kg?

A soccer player heads the ball with an average net force of 12 N for 0.12 s. What is the impulse provided to the soccer ball?

The following figure shows the velocity-time graph of a particle of mass 500 g moving in a straight line. What is the force acting on the particle?

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass 'm' as shown in the figure. A force F is applied to one end of the rope. What is the force that the rope exerts on the block?