Forces: made by Ruby Flashcards
1
Q
Which of these is the best way to measure a force?
- Using a force meter
- Using a ruler
- Using a thermometer
A
-Using a force meter
2
Q
Forces can be:
- Pushes only
- Pulls only
- Pushes and pulls
A
-Pushes and pulls
3
Q
What is the unit of force called?
- The newton, n
- The newton, N
- The neutron, N
A
The newton, n
4
Q
What can we say about the forces on an object that is not moving?
A
The forces must be balanced
5
Q
What happens to the air resistance on a car as the car goes faster?
- It decreases
- It stays the same
- It increases
A
It increases
6
Q
One way to increase the turning force on a spanner is to:
- Use a shorter spanner
- Use a longer pivot
- Use a longer spanner
A
Use a longer spanner
7
Q
Gravity is an example of what?
- A contact force
- An un-contact force
- A non-contact force
A
A non-contact force
8
Q
What store of energy does friction always produce?
- Heat
- Light
- Gravitational potential
A
Heat
9
Q
A force of 4n acts on a lever 2 m from the pivot. What is the moment?
- 2 Nm
- 4 Nm
- 8 Nm
A
8 Nm
