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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.MiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

How much work must be done by a force on $50 kg$ body in order to accelerate it from rest to $20 m s^{- 1}$ in $10 s$ ?

Options:

Answer:

Solution:

Now, $s = u t + \frac{1}{2} a t^{2}$

$s = 0 + \frac{1}{2} \times 2 \times 10 \times 10$

$s = 100 m$

Hence, work done

$W = F \times s$

$W = m a \times s$

$W = 50 \times 2 \times 100$

$W = 10000 = 1 0^{4} J$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:W.E.P.Subtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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