1
Q
Force is measured in what unit?
A
Newtons (N)
2
Q
The different types of forces include:
A
- Tension
- Weight
- Reaction
- Friction
- Thrust
3
Q
Resultant force
if there is a resultant force:
A
- speed up
- slow down
- change direction
4
Q
Resultant force
if there is no resultant:
A
- stay still
- stay at a constant speed
5
Q
Mass is measured in what unit?
A
Kilograms (kg)
6
Q
Weight is measured in what unit?
A
Newtons (N)
7
Q
What is the equation to calculate weight?
A
Weight = Mass x Gravitational Field Strength
8
Q
Is mass fixed?
A
Yes.
9
Q
Is weight fixed?
A
No.
10
Q
What is the equation to calculate speed?
A
average speed = distance travelled / time taken
11
Q
Give an example of apparatus that can be used with the equation: speed = distance / time
A
- speed; (m/s)
- distance; trundle wheel (m)
- time; stopwatch
e.g speed = 250m / 20s = 12.5 m/s
12
Q
What is the equation for finding the gravitational field strength? (N/kg)
A
= weight ÷ mass
physics 「year 7」
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