Question

A particle starts from rest. Its acceleration (a) versus time (t) is as shown in the figure. The maximum speed of the particle will be

• A. 110 m/s
• B. 55 m/s
• C. 550 m/s
• D. 660 m/s

Answer 1

Answer: (B)

55 m/s

Answer 2

Area under acceleration-time graph gives the change in velocity. Hence, $\, \, \, \, \, \, v_{max}=1/2 \times 10 \times 11=55 m/s$ Therefore, the correct option is (b).