Question

A body travelling with a velocity of 120 ms-1 accelerates uniformly at the rate of 20 ms -2 for a period of 40 s.
Calculate the velocity and the distance travelled in 40 s.

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Answer 1

Explanation:

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Answer 2

Answer:

velocity =680 m/s distance =2090 m

Explanation:

u=120m/s

t=40sec

a=20m/s^2

using 1st equation of motion

v=at-u

= 800-120

= 680 m/s

now by using 3rd equation

s=ut+at^2/2

=120×40 + 20×1600/2

=2090 m