Question

The acceleration-time graph of a particle moving in a straight line (x-axis) is shown in figure. If the initial velocity of particle is 20 m/s in positive x-direction, then find the speed of particle at t = 30 s (in m/s).

Answer 1

Answer:

Acceleration time graph of a particle moving in a straight line is shown in fig. If velocity of particle at time t=0 is 2m/sec then find the velocity of particle at the end of 4

th

second :-

V=2m/s+area

=2+

2

1

×4×4=10m/s

Ans.(B)