P2 - Forces Flashcards
1
Q
equation for speed
A
speed (m/s) = distance (m) / time (s)
2
Q
equation for velocity
A
velocity = displacement / time
3
Q
what are scalar quantities
A
- has magnitude (size) only
> e.g. mass, temperature, time, speed, distance, energy, power
3
Q
what are vector quantities
A
- has magnitude (size) and direction
> e.g. displacement, velocity, acceleration, force, moment
4
Q
what is the difference between displacement + distance
A
- distance = scalar - measured along actual path taken form A to B
- displacement = vector - measured along straight line from A to B - has direction as it’s vector
5
Q
what objects are used to measure distance
A
- metre ruler (lessons)
- larger distances = measuring (trundle) wheel
5
Q
what objects are used to measure time
A
- stopwatch
- light gate
5
Q
what is acceleration
A
- change in velocity over time
6
Q
A
6
Q
what is the equation for acceleration
A
- acceleration (m/s*2) = change in velocity (m/s) / time taken
7
Q
A
7
Q
A
8
Q
A
8
Q
A
9
Q
A
10
Q
A
11
Q
A
11
Q
A
12
Q
A
12
Q
A
13
Q
A
13
Q
A
14
Q
A
14
Q
A
14
15
15
15
16
16
16
17
17
17
17
18
18
18
18
18
19
19
20
21
22
23
23
23
24
25
25
26
26
26
27
27
27
27
28
28
29
29
29
29
29
30
31
31
32
33
33
33
34
35
35
35
35
35
36
36
36
36
37
37
37
37
38
38
39
39
39
39
40
40
41
