Physics I Review

Front

What happens to the force acting on an object in outer space after it is thrown?

Back

There is no force acting on it after it leaves your hand.

Front

What is the direction of acceleration for a bicyclist who must stop while moving north?

Back

South.

Front

What do you call the measure that describes how fast something is going and the direction it is going in?

Back

Velocity.

Front

In a velocity-time graph, which section indicates increasing velocity?

Back

The section labeled AB.

Front

What is the net force if two forces of 5 N right and 2.5 N left are acting on an object?

Back

2.5 N right.

Front

Define 'Force' in physics.

Back

A push or pull on an object resulting from its interaction with another object.

Front

What is 'Acceleration'?

Back

The rate of change of velocity of an object.

Front

Explain 'Displacement'.

Back

The shortest distance from the initial to the final position of an object, including direction.

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 does a flat line on a distance-time graph represent?

Back

An object at rest.