# 5A Forces II

## Quiz by Gideon Williams

### Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

11 questions
• Q1
For work to be done..
Energy must be transferred from one form to another
A force must be involved
An object must move a distance with a force acting on it
There is a change in direction of the force
30s
• Q2
The formula for Word done is
N x m
F x s
W x s
F x d
30s
• Q3
Tony lifts a can of beams weighing 2kg to a shelf 50cm high. What work does he do?
10J
1J
100J
1000J
30s
• Q4
Who is doing work?
Martin holds up his Albert Hein shopping in 2 bags
Jill stops a car rolling down a slope
Sally stands at the top of the stairs
Bob pushes a wheelbarrow into his garden
30s
• Q5
A spring returns to its original length when stretched
Plastic deformation
Elastic deformation
Inelastic deformation
Spring constant
30s
• Q6
Units of the spring constant?
N/m
Nm
N/cm
N
30s
• Q7
A spring is 25cm long. A 10N weight is added to it and it stretches to 35cm. If the elastic limit is not met, what is the spring constant?
100N/cm
1N/cm
10N/cm
100N/m
30s
• Q8
A spring is 25cm long. It stretches to 45cm. If the spring constant is 20N/m, how much elastic potential energy has it stored?
4J
400J
0.4J
40J
60s
• Q9
An experiment is set up to measure how much a spring stretches. Weights are added to the spring and the extension measured. What is the independent variable?
Distance stretched to
Force
Extension
Length of spring
30s
• Q10
An experiment is set up to measure how much a spring stretches. Weights are added to the spring and the extension measured. What is the dependent variable?