CP2b Newton's First Law Flashcards
1
Q
How many laws of motion did Sir Isaac Newton work out?
A
Three
2
Q
Newton’s First Law
A
- a moving object will continue to move at the same speed and direction unless an external force acts on it
- a stationary object will remain at rest unless an external force acts on it
3
Q
The overall resultant force is important when you are looking at how…
A
The velocity of an object changes
4
Q
The velocity of an object will not change if the forces are…
A
Balanced
5
Q
The speed and/or the direction of an object will change if the forces are…
A
Unbalanced
6
Q
Centripetal force
A
Is the resultant force that causes change in direction and objects to follow a circular path. The force acts towards the centre
7
Q
Types of force that can make objects move in a circular path (excluding centripetal)
A
Friction and Gravity
