Study the velocity-time graph shown below and answer the questions that follow:

Study the velocity-time graph shown below and answer the questions that follow:

(i) The distance travelled in 5s:

1. 10 m
2. 50 m
3. 125 m
4. 250 m

(ii) The retardation of the body as calculated from the graph is:

1. 12 ms^-2
2. 15 ms^-2
3. 10 ms^-2
4. 20 ms^-2

(i) 125 m

Reason — As distance = velocity x time

So, (50 – 0) x (5 – 0) = 50 × 5 = 125 m

Hence, distance travelled in 5 s = 125 m

(ii) 10 ms^-2

Reason —

Retardation = Slope of Straight line

= 50 - 0\over 5-0

= 50\over 5 = 10 m s^-2

Hence, retardation = 10 ms^-2