Question

A car is initially at rest on a straight road. The histogram below shows the car's speed along that road (the x-axis) as a function of time.

A x-Velocity (1/5) nNHO @ 1 2 3 4 5 9 10 11 12 13 14 6 7 8 Tine (s)

Calculate the distance traveled by the car during the first 5 s.

Calculate the distance traveled by the car from t=10 to t=14 s.

Calculate the average speed of the car from t = 6 s to t=9 s.

Answer 1

Area under curve of u-t graph gives us the distance travelled one box - represent the lm distance. to → tes . - d=18 m ( No. of boxes from t=0 tots - under cuore is 18-) W -20mi u t=lo to t=14 de 20m = (sxu)m=20m. distance frovelled from tz6 to tq. de=21m. time=9 sec- 6 see=3sec average speed = 21m = Impsec.