Force & Motion

Front

What kind of energy does a moving skateboarder represent?

Back

Kinetic energy is the energy of motion.

Front

What is the formula to calculate average speed?

Back

Average speed = total distance / total time.

Front

What kind of energy does a stationary rock hold?

Back

Potential energy is stored energy based on position.

Front

If a man and a ball travel 90 m in 9 seconds, what is their average speed?

Back

10 m/s.

Front

What is net force?

Back

Net force is the total force acting on an object, taking into account all the individual forces.

Front

What happens to an object at rest when a net force is applied?

Back

It will accelerate in the direction of the net force.

Front

What is friction?

Back

Friction is a force that opposes motion between two surfaces in contact.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause acceleration.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).