Question

A body starts from rest in a straight line with an acceleration of 8.0m/s2.Draw its time-velocity graph and determine:(i)Velocity of the body after 5 seconds. (ii) How much distance does the body has moved in first 5 seconds? (iii) What average velocity of the body is during this time?

Answer 1

Hey.

Here is the answer.

a = 8 m/s^2

i) u = 0 ; t = 5 s

As v = u + a t

so, v = 0+ 8×5 = 40 m/s

ii) Also, s = u t + 1/2 a t^2

so, s = 0 + 1/2×8×5^2 = 100 m

iii) average velocity = (u + v)/2

= (0+40)/2

=20m/s

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The V-t graph will be a straight line starting from origin inclined to time axis such that a = 8m/s^2 and V= 40 m/s at t = 5s

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Thanks .

Answer 2

Answer:

hope this help

my writing is not good