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qUESTIONS

A ball of mass 150 g starts moving with an acceleration of 20m/s2. When hit by a force, which acts on it for 0.1 sec the impulsive force is

A cricket ball of mass 150g has an initial velocity =(31+4))m/s and a final velocity v=-(3î+4})m/s,after being hit. The change in momentum (final momentum – initial momentum) is (in kg m/s)

In the previous question (4), the magnitude of momentum transferred during the hit is

A 100 g iron ball having velocity 10 m/s collides with a wall at an angle 30° and rebounds with the same angle. If the period of contact between the ball and wall is 0.1 second, then the to force experienced by the wall is

Two bodies of mass 3 kg and 4 kg are suspended at the ends of massless string passing over a frictionless pulley. The acceleration of the system is (g = 9.8m/s2

A light string passes over a frictionless pulley. To one of its ends a mass of 6 kg is attached. To its other end a mass of 10 kg is attached. The tension in the thread will be

Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table

An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 ms 1 and 2 kg second part moving with a velocity of 8 ms1. If the third part flies off with a velocity of 4 ms1, its mass would be

A particle of mass 0.3 kg is subjected to a force F = -kx with k = 15N/m. What will be its initial acceleration if it is released from a point 20 cm away from the origin

A rigid ball of mass m strikes a rigid wall at 60° and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be

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