Question

Usha swims in a 90 m long pool . She covers 180 m in one minute by swimming from one end to the other end and back along the same straight path . Find the velocity and acceleration of Usha .​

Answer 1

Answer:

both are zero

because

velocity will be zero

as both initial and final positions were same

Explanation:

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Answer 2

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Usha swims in a 90 m long pool . She covers 180 m in one minute by swimming from one end to the other end and back along the same straight path . Find the velocity and acceleration of Usha

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$displacement(d) = 0$

$(because \: she \: starts \: and \: ends \: at \: the \: \\ same \: point)$

$time \: taken(t) = 60 \: sec \\ (1 \: min = 60 \: sec)$

$velocity = \frac{d}{t}$

$= \frac{0}{60}$

${\boxed {\boxed {velocity = 0 \: m/s}}}$

$acceleration = \frac{v - u}{t}$

$here \: velocity = 0$

$= \frac{0}{60}$

${\boxed {\boxed {acceleration = 0 \: {m/s}^{2}}}}$

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