Chapter 1. Motion, Forces And Conservation Of Energy Flashcards
1
Q
Vectors have
A
Magnitude and direction
2
Q
Examples of vector quantities
A
Force, velocity, weight, acceleration
3
Q
Scalar quantities have
A
Magnitude
4
Q
Examples of scalar quantities
A
Speed, distance, mass, energy, temperature, time
5
Q
Distance travelled =
A
Speed x time
6
Q
Newton’s first law
A
A resultant force is needed to make something start moving, speed up or slow down
7
Q
Weight =
A
Mass(kg) x gravitational field strength(n/kg)
8
Q
Newton’s third law
A
Avery action has an equal and opposite reaction
9
Q
Momentum =
A
Mass x velocity
10
Q
Force =
A
Mass x acceleration
11
Q
Types of energy stores
A
Kinetic Thermal Chemical Gravitational potential Elastic potential Electrostatic Memetic Nuclear
12
Q
Conservation of energy means
A
Energy is never created or destroyed
13
Q
Examples of non - renewable resources are
A
Fossil fuels, nuclear fuels
14
Q
Examples of Renewable resources are
A
Bio-fuels Wind The sun (solar) Hydro-electricity Tides
