Question

An object move along a straight line with an acceleration of 2m/s².if its initial speed is 10m/s, what will be its speed 5 s later?
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Answer 1

Explanation:

a=2m/s²

u=10m/s

t=5sec

v=?

from equation

v=u+at

v=10+2*5

v=10+10

v=20m/s

Answer 2

Answer:

v=u+at

u=10m/s

a=2m/s^2

t=2m/s

v=10+2×2

v=10+4

v=14m/s

The velocity of the object 2 seconds later will be 14m/s.