If a body starts its motion with a velocity of $20 m/s$ , find its maximum speed during the motion as shown.

12 m/s

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28 m/s

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24 m/s

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36 m/s

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Solution

The correct option is D 36 m/s
$V$ is max at $t = 2 s$ because after $t = 2 s$ we get retardation.

$Δ V = 8 \times 2 = 16 \Rightarrow V - 20 = 16 V = 36$

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If a body starts its motion with a velocity of 20 m/s, find its maximum speed during the motion as shown.

The correct option is D 36 m/sV is max at t=2 s because after t=2 s we get retardation. ΔV=8×2=16⇒V−20=16V=36

If a body starts its motion with a velocity of $20 m/s$ , find its maximum speed during the motion as shown.

The correct option is D 36 m/s
$V$ is max at $t = 2 s$ because after $t = 2 s$ we get retardation.

$Δ V = 8 \times 2 = 16 \Rightarrow V - 20 = 16 V = 36$