Question

4a & van travels at a constant speed of 15 m/s for 60 seconds.
Show this on a graph. Put time on the horizontal axis and speed on the vertical axis.
The speed of a car increases steadily from 0 m/s to 30 m/s over 20 seconds. It travels at 30 m/s for
30 seconds. Then the speed steadily decreases from 30 m/s to 0 m/s in 10 seconds.
Show the speed of the car on the same graph.
For how many seconds is the car travelling faster than the van?

Answer 1

Answer:

ans is 45 sec

hope it helps