Revise smart, understand Better

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Revise smart, understand Better

Dynamics: Newton’s Laws of Motion
ELECTRICITY: Current
ELECTRICITY: Current
ELECTRICITY: Resistance
Elasticity
Electric fields
Electromagnetism
Electromagnetism
Energy: Application And Uses
Experimental physics
Forces
Gravitational fields
Heat
Kinematics in Two Dimensions: Vectors, projectiles
Kinematics in one dimension
Linear Momentum
MOTION
MOTION
MOTION
MOTION
MOTION
MOTION: Circular
MOTION: Collision
MOTION: Inclined plane
MOTION: Simple harmonic motion (SHM)
Magnetism
Optics
PLASTICS
PRESSURE
Radioactivity
TEMPERATURE
The Laws of Thermodynamics
Units System
Units System
Units, dimensions and homogeneity
WAVES: Electromagnetic
WAVES: Electromagnetic
WAVES: Sound

5/32 MCQs for:

Linear Momentum

Consider two unequal masses, M and m. Which of the following statements is false?

The center of mass lies on the line joining the centers of each mass.

The center of mass is closer to the larger mass.

If a uniform rod of mass m were to join the two masses, this would not alter the position of the center of mass of the system without the rod present.

It is possible for the center of mass to lie within one of the objects.

A soldier who fires a bullet from a gun has the tendency to move backwards as the bullet flies forward.

This observation can be explained by:

Newton’s second law.

Newton’s first law of motion.

Conservation of mechanical energy.

Conservation of linear momentum.

A very heavy object moving with speed v collides head-on with a very light object at rest. The collision is elastic, and there is no friction. The heavy object barely slows down. What is the speed of the light object after the collision?

Nearly 2v.

Nearly v.

Nearly infinite.

Nearly 3v.

A rubber ball with a speed of 5.0 m/s collides head-on elastically with an identical ball at rest. What is the speed of the initially stopped ball after the collision?

Zero.

2.5 m/s.

1.0 m/s

5.0 m/s.

In an elastic collision, if the momentum is conserved, then which of the following statements is true about kinetic energy?

Kinetic energy is gained.

Kinetic energy is also conserved.

None is correct.

Kinetic energy is lost.