Speed, Velocity, Acceleration and Force

Front

What is the formula to calculate distance when speed and time are known?

Back

Distance = Speed × Time

Front

Define 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 acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

How do you calculate velocity?

Back

Velocity = Displacement / Time.

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 are unbalanced forces?

Back

Unbalanced forces are forces that cause an object to accelerate in the direction of the net force.

Front

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

Back

The unit of force is the Newton (N).

Front

If a car travels 55 km South in 130 seconds, what is its velocity?

Back

0.4 km/s South.

Front

What does it mean if an object is in motion?

Back

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