Question
A cyclist is cycling at a uniform velocity of 8m/s for 8 seconds. He then stops paddling and
the cycle comes to rest in next ten seconds. Draw the velocity-time graph and calculate: (i)
the average retardation.(ii) the distance covered with uniform velocity.(iii) the distance
covered with variable velocity.(iv) the average velocity of the cyclist.
the cycle comes to rest in next ten seconds. Draw the velocity-time graph and calculate: (i)
the average retardation.(ii) the distance covered with uniform velocity.(iii) the distance
covered with variable velocity.(iv) the average velocity of the cyclist.
Answers
drwls
You paddle a canoe but you pedal a bicycle. What do you mean by "retardation?"
You will have to draw the graph yourself. If you plot V on the y axis and time on the x axis, you have a horizontal line at V = 8 from t = 0 to t = 8; then the line drops in a slanted straight path to V=0 (the x axis) at t = 18.
ii) 8 * 8 = 64 m
iii) (1/2)*10*8 = 40 m
iv) (64+40)/(10+8) = 5.78 m/s
You will have to draw the graph yourself. If you plot V on the y axis and time on the x axis, you have a horizontal line at V = 8 from t = 0 to t = 8; then the line drops in a slanted straight path to V=0 (the x axis) at t = 18.
ii) 8 * 8 = 64 m
iii) (1/2)*10*8 = 40 m
iv) (64+40)/(10+8) = 5.78 m/s