Outcome 9 Revision

What is the formula for calculating speed?

• speed = distance / time

• speed = time / distance

• speed = distance x time

• speed = distance + time

What is the difference between speed and velocity?

• Speed is a scalar quantity while velocity is a vector quantity

• Speed is a vector quantity while velocity is a scalar quantity

• There is no difference between speed and velocity

• Speed is measured in m/s while velocity is measured in m/s^2

What is acceleration?

• The rate of change of speed

• The rate of change of velocity

• The rate of change of distance

• The rate of change of time

What is gravity?

• A force that stops objects from moving

• A force that keeps objects in motion

• A force that repels two objects away from each other

• A force that attracts two objects towards each other

What is Newton’s first law of motion?

• Force equals mass times acceleration

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

• An object at rest will remain at rest, and an object in uniform motion will remain in motion, unless acted upon by an unbalanced force

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass

What is Newton’s SECOND law of motion?

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

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

• An object at rest will remain at rest, and an object in uniform motion will remain in motion, unless acted upon by an unbalanced force

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass

What is Newton’s THIRD law of motion?

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

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

• An object at rest will remain at rest, and an object in uniform motion will remain in motion, unless acted upon by an unbalanced force

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass

A car travels 100 km in 2 hours. What is its average speed?

• 100 km/h

• 50 km/h

• 150 km/h

• 200 km/h