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NEET
Exam
NEET
Subject
Physics
Chapter
Motion in One Dimension

NEET · Physics · Motion in One Dimension

A particle starts from rest. Its acceleration a versus time t is...

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

Options

  1. A80 ms−180 \mathrm{~ms}^{-1}
  2. B40 ms−140 \mathrm{~ms}^{-1}
  3. C18 ms−118 \mathrm{~ms}^{-1}
  4. D2 ms−12 \mathrm{~ms}^{-1}

Correct answer

B. 40 ms−140 \mathrm{~ms}^{-1}

Step-by-step solution

As, we know Area under a−ta-t graph =v−u=v-u ⇒12×8×10=v(∵u=0)⇒v=40 ms−1\begin{array}{ll} \Rightarrow & \frac{1}{2} \times 8 \times 10=v (\because u=0)\\ \Rightarrow & v=40 \mathrm{~ms}^{-1} \end{array}
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