Physics Flashcards
(16 cards)
1
Q
Rate of change of speed
A
Final speed-initial speed/time taken
2
Q
Average speed
A
Distance/time
3
Q
GPE
A
Mass x height x 9.8
4
Q
Kinetic energy
A
1/2 x mass x 2
5
Q
Work done
A
Force x distance
6
Q
Power
A
Work done/time taken
7
Q
Density
A
Mass/volume
8
Q
Energy efficiency
A
Useful energy/total energy input
9
Q
Newtons 2nd law
A
The acceleration of a force is directly related to the net force and inversely related to its mass
10
Q
Hooke law
A
Force=spring stiffness x extension F=ke
11
Q
Weight
A
Mass x acceleration m x g
12
Q
Newtons second law
A
Force =mass x acceleration
13
Q
Acceleration
A
Final velocity -initial velocity/time taken
14
Q
Average velocity
A
Displacement/time taken
15
Q
Rate of change of speed
A
Final speed - initial speed/time taken
16
Q
Average speed
A
Distance/time
