NEET 2022 Phase 1 | Center of Mass and Collision Question 7 | Physics

Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is :

$${{10} \over 3}$$ m

$${{20} \over 3}$$ m

10 m

5 m

NEET 2021

MCQ (Single Correct Answer)

-1

A ball of mass 0.15 kg is dropped from a height 10m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is (g = 10 m/s²) nearly :

1.4 kg m/s

0 kg m/s

4.2 kg m/s

2.1 kg m/s

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass.
The centre of mass of the system from the 5 kg particle is nearly at a distance of :

50 cm

67 cm

80 cm

33 cm

NEET 2019

MCQ (Single Correct Answer)

-1

Body A of mass 4m moving with speed u collides with another body B of mass 2 m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is :

$${5 \over 9}$$

$${4 \over 9}$$

$${8 \over 9}$$

$${1 \over 9}$$

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