Question

A car starts with an initial velocity of 4 m/s and accelerates in a straight line at a constant rate of 5 m/s2 for 7 s. Find the velocity of the car after 7 s

Answer 1

Answer:

39m/swill the final velocity after 7sec using v=u+at

Answer 2

Answer:

39 m/s

Explanation:

u = 4m/s

a = 5m/s^2

t = 7s

So, by Newton's first EQ of motion..

v = u +at

= 4 + 5*7

=39 m/s

Hope it helped..

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