Question

A body with an initial velocity of 18 km/h accelerates uniformly at the rate of 1.5 m/s^2 over a distance of 200 m. Its final velocity is​

Answer 1

Answer:

Final velocity is 25 m/s

Explanation:

u = 18 km/h = 18 x 5/18 = 5 m/s

a = 1.5 m/$s^{2}$

S = 200 m

According to third law of motion :

$v^{2} - u^{2} = 2 a S$

$v^{2} = 2 a S + u^{2}$

$v^{2}$ = 2 x 1.5 x 200 + 25

   = 625

v = 25 m/s

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