EFM Lesson 2 Review

Front

What is a reference frame?

Back

A reference frame is the point from which you observe motion.

Front

What is average speed?

Back

Average speed is the distance an object travels divided by the time of travel.

Front

What is net force?

Back

Net force is the total force acting on an object, taking into account all the individual forces.

Front

What is acceleration?

Back

Acceleration is the rate at which an object changes its speed or direction.

Front

How do you calculate average speed?

Back

Average speed = Total distance traveled / Total time taken.

Front

If a car travels 150 km in 3 hours, what is its average speed?

Back

50 km/hr.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What does it mean if an object is accelerating?

Back

It means the object is changing its speed or direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.