Topic 3 Lesson 1 Review

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined. It determines the object's motion.

Front

What is the unit of force?

Back

The unit of force is Newton (N).

Front

What is normal force?

Back

Normal force is a contact force that acts perpendicular to the surface an object is resting on.

Front

What is a contact force?

Back

A contact force is a force that occurs when two objects are in physical contact with each other.

Front

What is a non-contact force?

Back

A non-contact force is a force that acts on an object without physical contact, such as gravitational force.

Front

What does it mean to use a stationary object as a reference point?

Back

Using a stationary object as a reference point means to measure the position or motion of another object relative to an object that is not moving.

Front

Why should you not use a moving object as a reference point?

Back

Using a moving object as a reference point can lead to confusion and inaccurate measurements of motion.

Front

What happens to the speed of a parachutist when they open their parachute?

Back

When a parachutist opens their parachute, their speed decreases due to the increased air resistance.

Front

What is the direction of the net force if an object is accelerating downwards?

Back

The direction of the net force is downwards.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object; it remains at rest or continues to move at a constant speed.