Force and Motion Review

What is inertia?

• The tendency of an object to resist changes in its state of motion.

• The force that causes an object to accelerate.

• The speed of an object in a straight line.

• The mass of an object multiplied by its velocity.

What is Gravitational Potential Energy?

• The energy an object possesses due to its position in a gravitational field.

• The energy an object has due to its speed and motion.

• The energy stored in an object due to its temperature.

• The energy released when an object falls to the ground.

What is the relationship between force, mass, and acceleration?

• Force equals mass times acceleration (F = ma).

• Force is equal to mass divided by acceleration (F = m/a).

• Force is the product of mass and velocity (F = mv).

• Force is independent of mass and acceleration.

What happens to an object in motion when no net force acts on it?

• It comes to a stop immediately.

• It continues to move at a constant velocity.

• It accelerates in the direction of motion.

• It changes direction randomly.

What is the difference between speed and velocity?

• Speed is a vector quantity (magnitude and direction), while velocity is a scalar quantity (magnitude only).

• Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

• Speed and velocity are the same; both are scalar quantities.

• Speed is a measure of distance, while velocity is a measure of time.

What is acceleration?

• The rate of change of velocity of an object.

• The speed of an object in a straight line.

• The force applied to an object.

• The distance covered by an object over time.

What is the effect of friction on motion?

• Friction has no effect on motion.

• Friction opposes motion and can cause objects to slow down or stop.

• Friction increases the speed of moving objects.

• Friction only affects objects at rest.

What are action and reaction forces?

• For every action, there is an equal and opposite reaction.

• Action forces are stronger than reaction forces.

• Reaction forces occur only in motion.

• Action and reaction forces can exist without each other.

What is the formula to calculate mass when force and acceleration are known?

• M = F/a

• M = F * a

• M = a/F

• M = F + a

What is the unit of force?

• Pound (lb)

• Newton (N)

• Joule (J)

• Pascal (Pa)