Question

A race car is travelling at 18m/s when it accerlates at 4m/s2 for 2 seconds what is his new velocity​

Answer 1

Answer:

Using first equation of motion,

v = u + at

=> v = 18 + (4 × 2)

v = 18 + 8 =26 m/s

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Answer 2

Answer:

26 m / sec.

Explanation:

Given :

Initial velocity u = 18 m / sec

Acceleration a = 4 m / sec²

Time t = 2 sec

We are asked to fins final velocity v :

From first equation of motion we know :

v = u + a t

Putting values here we get :

v = 18 + 4 × 2 m / sec

v = 18 + 8 m / sec

v = 26 m / sec

Therefore , new velocity of car is 26 m / sec.