Semester 2 Exam Review

Front

What is the difference between instantaneous speed and average speed?

Back

Instantaneous speed happens in a particular instant, while average speed is the speed of an object over a longer period of time.

Front

What is the net force?

Back

The net force is the overall force acting on an object, which can be calculated by combining all individual forces acting on it.

Front

What is the motion of a person from 5 seconds to 10 seconds if they are standing still?

Back

The person is not changing their position; they are stationary.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted on by another force.

Front

What is the unit for force?

Back

The unit for force is called a Newton.

Front

Define average speed.

Back

Average speed is the total distance traveled divided by the total time taken.

Front

Define instantaneous speed.

Back

Instantaneous speed is the speed of an object at a specific moment in time.

Front

What does balanced forces mean?

Back

Balanced forces occur when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when the forces acting on an object are not equal, causing the object to accelerate.

Front

What is the formula for calculating force?

Back

Force can be calculated using the formula F = m x a, where F is force, m is mass, and a is acceleration.