Category 2 Force and Motion

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

What is potential energy?

Back

The energy stored in an object due to its position or state.

Front

At which point is potential energy greatest in a roller coaster?

Back

At the highest point.

Front

What happens to an object when balanced forces act on it?

Back

It stays still or continues moving at a constant speed.

Front

What is the unit of speed?

Back

km/hr.

Front

What is the difference between speed and velocity?

Back

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

Front

What is inertia?

Back

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

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is kinetic energy?

Back

The energy of an object due to its motion.

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

Force = Mass x Acceleration.