Paper 1 - Forces and Motion Flashcards
1
Q
What can affect stopping distance?
A
- Speed of vehicle
- Mass of vehicle
- Road condition
- Reaction time
- Condition of breaks
2
Q
Describe terminal velocity
A
- Drag increases with velocity
- Forces become balanced
- Resultant force = 0N
- There is no acceleration
3
Q
What is the equation for average speed?
A
average speed = distance travelled / titme taken
4
Q
Is dispalcement a scalar or vector quantity?
A
Vector
5
Q
Is velocity a vector or scalar quantity?
A
Vector
6
Q
Is distance a vector or scalar quantity?
A
Scalar
7
Q
What is the equation for acceleration?
A
a = (v-u) / t
8
Q
Is speed a vector or scalar quantity?
A
Scalar
9
Q
What force does friction oppose?
A
Motion (and vice versa)
10
Q
How do vector quantities differ from scalar quantities?
A
- Vector quantities have direction and magnitude
- Scaler quantities have direction only
11
Q
What is the equation for weight?
A
W = m x g
12
Q
Is force a vector or scalar quantity?
A
Vector
13
Q
What is Newton’s 2nd law of motion?
A
F = m x a
14
Q
What is the equation for final speed?
A
v^2 = u^2 + (2 × a × s)
15
Q
Describe the effects of forces between bodies
A
- If a force acts on a body, it can decrease or increase in speed, change shape or change direction
