Question

g
O
4. The figure below shows a displacement-time
graph of a car. Describe the motion of the car.
From the graph, calculate (a) the velocity of car
from 10s to 50s and (b) average velocity of the
car in the first 30 s.
50
50
a
40
1
30
30
0
Displacement (m)
20
10
10 10
10
be
i)
0
40
50
10
20 30
Time (s)-
m,​

Answer 1

Answer:

1

×v

0

×(6−1)=90

2

1

×v

0

×5=90

v

0

=36m/s

Acceleration =

4−1

v

0

=

3

36

=12m/s

2

Deceleration =

6−4

v

0

=

2

36

=18m/s

2