P2 Forces Revision Key Words

HideShow resource information
• Created by: manufanr
• Created on: 17-10-13 11:33
Force
A force can change the motion of an object (in newtons, N)
1 of 15
Newton
The unit of force (N)
2 of 15
Resultant force
The combined effect of the forces acting on an object
3 of 15
Mass
The quantity of matter in an object; a measure of the difficulty of changing the motion of an object (in kilograms, kg)
4 of 15
Stopping Distance
Thinking Distance + Braking Distance
5 of 15
Thinking Distance
The distance travelled by the vehicle in the time it takes the driver to react
6 of 15
Braking Distance
The distance travelled by a vehicle during the time its brake acts
7 of 15
Weight
The force of gravity on an object (in newtons, N)
8 of 15
Gravitational Field Strength
The force of gravity on an object of mass 1kg (in newtons per kilogram, N/kg)
9 of 15
Drag force
A force opposing the motion of an object due to fluid (e.g. air) flowing past the object as it moves
10 of 15
Terminal Velocity
The velocity reached by an object when the drag force on it is equal and opposite to the force making it move
11 of 15
Elastic
A material is elastic if it is able to regain its shape after it has been squashed or stretched
12 of 15
Directly Proportional
A graph will show this if the line of best fit is a straight line through the origin
13 of 15
Limit of proportionality
The limit for Hooke's Law applied to the extension of a stretched spring
14 of 15
Hooke's Law
The extenstion of a spring is directly proportional to the force applied, provided its limit of proportionality is not exceeded
15 of 15

Other cards in this set

Card 2

Newton

Back

The unit of force (N)

Resultant force

Mass

Card 5

Front

Stopping Distance