Motion And Energy Flashcards
1
Q
Speed
A
Distance / time
2
Q
Difference between speed and velocity
A
Velocity is a speed in a certain direction
3
Q
Acceleration
A
Change in velocity / time
4
Q
Inertia
A
U inform motion
5
Q
Newton’s first law
A
Object stays at rest unless acted on by an unbalanced force
6
Q
Momentum
A
Mass x velocity
7
Q
Conservation of momentum
A
Cannot be created or destroyed
8
Q
Newton’s second law
A
Force = mass x acceleration
9
Q
Force =
A
Rate of change of momentum
10
Q
Weight
A
Mg
11
Q
Gfs
A
10N/kg
12
Q
Terminal velocity involves what forces
A
drag force of resistance
Gravitational pull
13
Q
Newton’s third law
A
Every action there is an equal and opposite reaction
14
Q
Work equ
A
Force x distance moved in direction of force
15
Q
Work done ?
A
Transfer of energy