Forces Review

Front

What is the formula to calculate the force exerted by an object?

Back

Force (F) = Mass (m) × Acceleration (a)

Front

Define mass in the context of physics.

Back

Mass is the amount of matter in an object, typically measured in kilograms (kg).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion, whether at rest or moving at a constant velocity.

Front

How does the mass of an object affect its inertia?

Back

The greater the mass of an object, the greater its inertia. For example, a 9 kg mass has 3 times the inertia of a 3 kg mass.

Front

What is net force?

Back

Net force is the total force acting on an object after all the forces are combined.

Front

If an object is at rest and the forces acting on it are balanced, what is the net force?

Back

The net force is zero.

Front

What happens to the motion of an object if the net force acting on it is positive?

Back

The object will accelerate in the direction of the net force.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from moving when a force is applied.

Front

If a crate is pushed with a force of 200 N but does not move, what can be inferred about the friction force?

Back

The friction force must be equal and opposite to the applied force, which is 200 N to the left.

Front

What is the relationship between action and reaction forces according to Newton's Third Law?

Back

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