Topic 2 - Forces And Motion - Newtons First Law

Question 1

What does Newton’s First Law state?

Answer 1

An object has a constant velocity unless acted on by a resultant force

This law emphasizes the concept of inertia.

Question 2

What happens to an object when a resultant force acts on it?

Answer 2

It will accelerate

Acceleration is defined as the change in velocity over time.

Question 3

How is acceleration defined?

Answer 3

Change in velocity over time

Acceleration can involve changes in speed, direction, or both.

Question 4

What occurs if the resultant force acting on an object is zero?

Answer 4

No acceleration

This means the object is either moving at a constant velocity or is at rest.

Question 5

If an object is moving at constant velocity, what does that imply?

Answer 5

Same speed and same direction

It indicates that there are no net forces acting on the object.

Question 6

True or False: An object can be at rest if the resultant force is zero.

Answer 6

True

Being at rest means the object has no speed.

Question 7

Fill in the blank: Acceleration occurs when there is a _______ acting on an object.

Answer 7

[resultant force]

This force causes changes in the object’s velocity.