QUIZ 2 (TOPIC 3)

Linear momentum is a

• scalar quantity
• force
• product of velocity and mass
• product of mass and acceleration

Impulse is equal to the change of

• force
• velocity
• momentum
• kinetic energy

The principle of conservation of linear momentum states that

• the total initial momentum of all objects interacting with one another is not equal the total final momentum
• the total initial momentum of all objects interacting with one another is equal to the total final momentum.
• the total initial momentum of all objects interacting with one another is more than the total final momentum
• the total momentum of all objects interacting with one another is always remains not conserved

Kinetic energy is conserved in ..................... collision.

• elastic
• inelastic
• perfectly inelastic
• elastic and inelastic

Elastic collision and inelastic collision can be differentiated by

• kinetic energy
• momentum
• force
• impulse

Which of the following statements is TRUE about Newton's Second law of motion?

• A vector sum of all forces acting on a particle must be zero
• For every action, there is an equal and opposite reaction force
• An object remains at rest or in uniform motion in a straight line unless acted upon by an external force
• The acceleration of the object directly proportional to the net force acting on it and inversely proportional to its mass

The force of gravity acting on an object is also known as

• Impulse
• Mass
• Acceleration
• Weight

Based on the figure below, which of the following forces is NOT acting on the stationary object?

• Normal force
• Tension
• Weight
• Frictional force

What are the forces exerted on an object placed on a flat smooth surface?

• Weight and frictional force
• Normal force and weight
• Weight, frictional force and normal force
• Weight and external force

 Which of the following statement is Newtons 3rd Law

• In isolated system, the total force is contant

• If an object is moving, its remain moving with constant velocity unless there are external force act on it

• The rate of change of momentum of an object is directly proportional to the net force acting on it

• For every action there is reaction of equal magnitude but in opposite direction.