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A particle of mass 2 kg has an initial velocity and-final velocity . Find the change in momentum.
Calculate the magnitude of force required to move a particle of mass 3 kg from rest through a distance of 4m in 1s.
Two forces 3i N and 4j N act on an object of mass 5kg. Find the acceleration of the object.
A car starts from rest with a constant acceleration along a straight road and passes through a point A to point B, 120m apart in 4.0s. The speed of the car at point B is 35 ms^{-1}. What is the acceleration of the car?
A car starts from rest with a constant acceleration along a straight road and passes through a point A to point B, 120m apart in 4.0s. The speed of the car at point B is 35 ms^{-1} .What distance, correct to the nearest metre, did the car cover before reaching A?
An electric lamp hangs vertically from a light cord attached to the ceiling of an elevator. The elevator is descending with a deceleration of 2ms and tension in the cord is 25N. What is the mass of the lamp?
An electric lamp hangs vertically from a light cord attached to the ceiling of an elevator. The elevator is descending with a deceleration of 2ms and tension in the cord is 25N. What is the tension in the cord when the elevator is ascending with an acceleration of 2 ms^{-2} ?
A body moving in linear motion starts with an initial velocity of 5 ms^{-1}. Its acceleration after 10s is 6 ms^{-2. }What is its velocity at this instance?
A body of mass 1 kg moving with velocity u = 4i + 3j collides and combines with a mass of 2kg moving with velocity v = 4i -3j, calculate their common velocity.
A force of 10N acts in the direction of 060^{0} and a force of 6N also acts in the direction 330^{0}. Find the y component of their resultant.
What force is required to make a 4kg box resting on a horizontal table just to move when pulled horizontally ?
Determine the greatest height reached when a particle is projected vertically upwards from a given point with velocity 20ms^{-1}. [Take g = 10 ms^{-2}]
A body of mass 3kg moving with velocity 20ms ^{-1} collides with a body Q of mass 5kg. After collision the bodies move with a velocity 35ms^{-1}. Find the velocity of Q before collision.
If the force F = (5N, 045^{0}), find 3F
A body of mass m moving with a velocity of v_{1} = 2i + 3j, brings to rest a body of mass 6kg moving in the opposite direction with a velocity of v_{2} = 6i + 9j. Find the mass m.
A particle is projected upwards from a point O with a speed of 10ms^{-1}. [Take g = 10ms^{-1}]. What is the greatest height reached by the particle?
A particle is projected upwards from a point O with a speed of 10ms^{-1}. [Take g = 10ms^{-1}]. Find the time when the particle is 2.5m from the point O.
A car of mass 10^{3} kg travelling at 60ms^{-1} is brought to rest in 2 seconds, when the brakes are applied. Find the magnitude of the braking force.
F_{1} = (3i + 4j) and F_{2} = (3i -4j) N. Find the magnitude and direction of F_{1} + F