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A body of mass 2 kg starts from rest and...

A body of mass 2 kg starts from rest and moves with uniform acceleration . It acquires a velocity `20 m*s^(-1)` in 4 s.
(i) Power exerted on the body at 2s is

A

50W

B

100W

C

150W

D

200W

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A body of mass 2 kg starts from rest and moves with uniform acceleration . It acquires a velocity 20 m*s^(-1) in 4 s. (ii) Averrage power transferred to the body in first 2 s is

    A
    50W
    B
    100W
    C
    150W
    D
    200W

  • If a a body starts from rest and moves with uniform acceleration then

    A
    `v prop t`
    B
    `s prop t`
    C
    `v prop s`
    D
    `s prop sqrt t`

  • A body of mass m starts from rest with an acceleration t and gains a velocity V at time T . IF is the power which is given to that body then p=

    A
    `((mv^2)/(2T^2)) cdot t`
    B
    `((mv^2)/(2T^2)) cdot t^2`
    C
    `((mv^2)/(T^2)) cdot t`
    D
    `((mv^2)/(T^2)) cdot t^2`

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