Physics- Friction, Weight and Mass Flashcards
1
Q
What is mass
A
- Never changes
- Measured in kg/g with balances or scales
- Mass is the matter in your body.
2
Q
What is weight
A
- An objects weight can change depending on the strength of gravity
- Weight is a force
- Measured in Newtons using a Newtonmeter
3
Q
How many Newtons is 1kg on earth
A
10 Newtons
4
Q
What has happened when the forces are balanced
A
When forces act and there is no effect
5
Q
What has happened when the forces are unbalanced
A
When forces act and there is an effect
6
Q
What is the leftover force called
A
The resultant force
7
Q
What is friction
A
Friction is a force that tries to slow things down or stop movement
8
Q
Why do we need friction
A
It helps us to stop and begin moving
9
Q
Why can friction be a nuisance
A
It prevents us reaching higher speeds and wears out moving parts
