A bus is moving on a straight road. The speed time graph for the motion of the bus is shown in figure. Find the distance travelled by the bus in 4 seconds.
(A) 100 m
(B) 200 m
(C) 300 m
(D) 400 m
why?
Ans 4:
Class : Class 8
The correct answer is B. In 4sec the objet increases its speed to 200m/s . Acceleration=(200-0)÷4 = 50m/s^2. S=ut 1/2Ãat^2. Solve it you'll get 400m. a=acceleration(50), t=time(4), u=initial velocity(0) and s is displacement(consider it distance travelled)