Question

4. A car travels with a uniform velocity of 20 m/s for 5 s. The brakes are then applied and the car is uniformly retarded. It comes to rest in further 8 s. Draw a graph of velocity against time. use this graph to find:

a) The distance travelled in first 5 s,

b) The distance travel after the brakes are applied

c) Total distance travelled

d) Acceleration during the first 5 s and last 8 s.​

Answer 1

Answer:

a)distance travelled is 100m.

b)distance travelled after the brakes are

applied is 240m. c)total distance travelled

is(100+240)m=340m

d)acceleration in first five seconds was 0 and retardation in the last eight seconds

is 2.5.

Step-by-step explanation: