REVISION_FORCE

Which of the following quantities is scalar quantity?

• velocity

• force

• displacement

• distance

“An object will remain in the state of motion unless acted on by an outside force”. This statement belongs to

• Newton’s second law

• Newton’s first law

• Newton’s third law

• Newton’s law of gravitation

What is inertia?

• Inertia is an object’s tendency to maintain its mass.

• Inertia is an object’s tendency to remain at rest.

• Inertia is an object’s tendency to resist changes in its velocity.

• Inertia is an object’s tendency to remain in motion.

Newton’s second law describes the relationship between which quantities?

• Force, mass and time

• Force, mass and displacement

• Force, mass and velocity

• Force, mass and acceleration

When an object travels on the road, which force is always opposite to the direction of motion?

• Friction

• Tension

• Gravity

• Applied force

Which force appears to oppose elastic deformation?

• Friction

• Tension

• Spring force

• Applied force

Which of the following factors is the friction NOT affected?

• Normal force

• The nature of a contact surface

• The speed of an object

• The direction of motion

Determine the accelerations that result when a 12-newton force is applied to a 3-kilogram object and then to a 6-kilogram object.

• 4m/s², 2m/s²

• 2m/s², 4m/s²

• 36m/s², 72m/s²

• 0.25m/s², 0.5m/s²

The unit “newton” is equivalent to_______

• kgms^-2

• kgms^-1

• kgm^-1s^-2

• kgms²

How is the net force acting on a kite to hold it stationary in the sky?

• It is decreasing

• It is zero

• It is increasing

• It equals 1.