Question

A bus moving along a straight line at 20m/s undergoes an acceleration of 4m/s2 . calculate it's speed after 2 seconds

for brainliest answer and 50 points

Answer 1

Hi friend
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Your answer
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Given that : -

A bus is moving along a straight line.

Initial velocity (u) = 20 m/s

Acceleration (a) = 4 m/s²

Time (t) = 2 Seconds

Final velocity (v) = ? [speed after 2 seconds.]

Now,
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Using formula : - v = u + at

=> v = 20 + 4 × 2

=> v = 20 + 8

=> v = 28 m/s

∴ Speed after 2 seconds is 28 m/s.

HOPE IT HELPS

Answer 2

Answer:

u=20m/s

a=4m/s sq.

v=?

Now,

Using 1st eq. of motion

v=u+at

v=20+4*2

v=28m/s

Hope it will help you......

Explanation: