Question

a bus moving along a straight line at 20m/sec undergoes an acceleration of4m/sec2 after 2 second what will be it's speed
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Answer 1

Answer:

28m/sec

Explanation:

WKT. ----/ v=u+at

therefore,. v =v

u=20m/sec

t= 2 sec

a=4m/sec

now putting the values in eq.....

v=20+4(2)

v=20+8

v=28

speed after 2 sec would be 28m/sec