A sphere collides with another sphere of identical mass. After collision, the two spheres move. The collision is inelastic. Then the angle between the directions of the two spheres is 

(1) 90°

(2) 0°

(3) 45°

(4) Different from 90°

Concept Questions :-

Linear momentum
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A particle of mass m moving eastward with a speed v collides with another particle of the same mass moving northward with the same speed v. The two particles coalesce on collision. The new particle of mass 2m will move in the north-easterly direction with a velocity 

(1) v/2

(2) 2v

(3) v/2

(4) v

Concept Questions :-

Linear momentum
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A bullet of mass a and velocity b is fired into a large block of mass c. The final velocity of the system is 

(1) ca+bb

(2) aa+cb

(3) a+bc.a

(4) a+cab

Concept Questions :-

Linear momentum
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A bag (mass M) hangs by a long thread and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then for the combined (bag + bullet) system 

(1) Momentum is mvMM+m

(2) Kinetic energy is mv22

(3) Momentum is mv(M+m)M

(4) Kinetic energy is m2v22(M+m)

Concept Questions :-

Linear momentum
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A particle of mass m moving with velocity v strikes a stationary particle of mass 2m and sticks to it. The speed of the system will be 

(1) v/2

(2) 2v

(3) v/3

(4) 3v

Concept Questions :-

Linear momentum
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A moving body of mass m and velocity 3 km/h collides with a rest body of mass 2m and sticks to it. Now the combined mass starts to move. What will be the combined velocity 

(1) 3 km/h

(2) 2 km/h

(3) 1 km/h

(4) 4 km/h

Concept Questions :-

Linear momentum
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If a skater of weight 3 kg has initial speed 32 m/s and second one of weight 4 kg has 5 m/s. After collision, they have speed (couple) 5 m/s. Then the loss in K.E. is 

(1) 48 J

(2) 96 J

(3) Zero

(4) None of these

Concept Questions :-

Linear momentum
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A metal ball of mass 2 kg moving with a velocity of 36 km/h has an head on collision with a stationary ball of mass 3 kg. If after the collision, the two balls move together, the loss in kinetic energy due to collision is 

(1) 40 J

(2) 60 J

(3) 100 J

(4) 140 J

Concept Questions :-

Linear momentum
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A body of mass 2kg is moving with velocity 10 m/s towards east. Another body of same mass and same velocity moving towards north collides with former and coalsces and moves towards north-east. Its velocity is 

(1) 10 m/s

(2) 5 m/s

(3) 2.5 m/s

(4) 52m/s 

Concept Questions :-

Linear momentum
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Which of the following is not a perfectly inelastic collision 

(1) Striking of two glass balls

(2) A bullet striking a bag of sand

(3) An electron captured by a proton

(4) A man jumping onto a moving cart

Concept Questions :-

Linear momentum
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