Grade 8 Energy, Forces and Motion

Front

What is the formula to calculate force?

Back

Force = Mass x Acceleration

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N)

Front

What is the definition of mass?

Back

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

Front

What is the difference between speed and velocity?

Back

Speed is the distance traveled per unit of time, while velocity is speed with a direction.

Front

What does it mean when an object is in motion?

Back

An object is in motion if its position changes relative to a reference point.

Front

What is inertia?

Back

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

Front

What is the relationship between mass and acceleration according to Newton's second law?

Back

As mass increases, acceleration decreases for a constant force.

Front

What is the definition of net force?

Back

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

Front

What happens to an object when the net force acting on it is zero?

Back

The object remains at rest or continues to move at a constant velocity.

Front

What is the definition of friction?

Back

Friction is the force that opposes the motion of an object.