Topic 4 Lesson 1 (Reference Point and forces)

Front

What is a reference point?

Back

A reference point is a stationary object or location used to determine the position or movement of another object.

Front

How does the choice of reference point affect the perception of motion?

Back

The perception of motion can change based on the reference point chosen; an object may appear to be moving or stationary depending on the observer's reference point.

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces acting on it are combined.

Front

What happens when forces are balanced?

Back

When forces are balanced, the net force is zero, and there is no change in the object's motion.

Front

What is motion?

Back

Motion is the change in position of an object over time relative to a reference point.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, which can occur due to a change in speed or direction.

Front

What is speed?

Back

Speed is the distance traveled by an object in a given amount of time, typically expressed in units like meters per second.

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 an example of a situation where an object is in motion?

Back

A cyclist riding down a hill is in motion relative to the ground.

Front

What is an example of a situation where an object is not moving?

Back

A book resting on a table is not moving relative to the table.