What is the average velocity of the sprinter whose velocity - time graph is shown in the figure Fig. 1.16 above?

Physics Jamb, Waec, Neco Past Questions & Answers on Speed, Velocity and Acceleration

QUESTION 34. What is the average velocity of the sprinter whose velocity - time graph is shown in the figure Fig. 1.16 above?

A. 85.0ms'1  B. 17.0ms'1  C. 8.5ms'1  D. 1.7ms'1

JAMB 1990 Ans: 8m/s

SOLUTIONS 

V = 10m/a 

t = 10s

Total distance s = ½ [AB + CD]S

s = ½[ 10 +6] 10

s = ½ [ 16] 10

s = 8 x 10

s = 80m

Average velocity= total distance/total time

Average velocity = 80/10

Average velocity = 8m/s