Physics Flashcards
(19 cards)
1
Q
Convert from mph to km/h
A
Multiply by 1.6
2
Q
Convert from km/h to m/s
A
Divide by 3.6
3
Q
Typical walking speed
A
1.4 m/s
4
Q
Typical running speed
A
3 m/s
5
Q
Typical cycling speed
A
5.5 m/s
6
Q
Typical Cars in a built-up area speed
A
13 m/s
7
Q
Typical Cars on a motorway speed
A
31 m/s
8
Q
Typical speed of trains
A
55 m/s
9
Q
Typical speed of a breeze
A
5 m/s
10
Q
Typical speed of a gale
A
20 m/s
11
Q
The speed of sound
A
340 m/s
12
Q
Human reaction time
A
0.2s - 0.8s
13
Q
How many milliseconds in 1 second?
A
1000
14
Q
Stopping Distance at 30 mph
A
9m thinking + 14m braking = 23 m (6 car lengths)
15
Q
Stopping Distance at 50 mph
A
15m thinking - 38m braking = 53 m (13 car lengths)
16
Q
Stopping Distance at 70mph
A
21m thinking + 75m braking = 96m (25 car lengths)
17
Q
Mass of a car
A
1,000 kg
18
Q
Mass of a bus
A
10,000 kg
19
Q
Mass of a loaded lorry
A
30,000 kg
