Question

a car start from rest and with uniform acceleration .the car travels100m in 5s .what is the final velocity​

Answer 1

Answer:

Final velocity is 40 m/s

Explanation:

Initial velocity,u = 0m/s

Distance,s = 100m

Time,t = 5s

According to second equation of motion,

s = ut + (1/2)at²

=> 100 = 0×5 + (1/2)×a×5×5

=> 100 = (25/2)×a

=> a = 100×2/25 = 8m/s²

According to first equation of motion,

v = u + at

=> v = 0 + 8×5

=> v = 40m/s

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