Minor Physics - CO3

What is Newton's First Law?

• Law of force and acceleration

• Law of action and reaction

• Law of inertia

• Law of energy and momentum

What is the unit of force in the SI system?

• Newton (N)

• Kilogram (kg)

• Meter (m)

• Second (s)

What is the relationship between force and acceleration?

• F ∝ a

• F ∝ 1/a

• F = ma

• F = 1/ma

What is the concept of inertia?

• Resistance to change in acceleration

• Resistance to change in speed

• Resistance to change in direction

• Resistance to change in motion

What is the normal force?

• Force exerted by an object on a surface

• Force exerted by a surface on an object

• Force exerted by gravity

• Force exerted by friction

6. What is friction?

• Force opposing motion

• Force promoting motion

• Force perpendicular to motion

• Force parallel to motion

What is the difference between static and kinetic friction?

• Static friction is greater than kinetic friction

• Kinetic friction is greater than static friction

• Static friction is less than kinetic friction

• Both are equal

How does Newton's Third Law apply to rocket propulsion?

• Action force is equal to reaction force

• Action force is greater than reaction force

• Action force is less than reaction force

• No reaction force

A block of mass 5 kg is moving with a velocity of 2 m/s on a frictionless surface. What is the force

required to keep the block moving with the same velocity?

• 0 N

• 5 N

• 10 N

• 20 N

A car accelerates from 0 to 20 m/s in 4 seconds. If the mass of the car is 1500 kg, what is the

force applied to the car?

• 750 N

• 1500 N

• 3750 N

• 7500 N