Question

A car accelerates from 50 m/s to 150 m/s in 5 seconds. What is the car's acceleration?

Answer 1

Answer:

20 m/s

Explanation:

Final velocity=150 m/s

Initial velocity= 50 m/s

Time taken = 5 s

Acceleration = ( final velocity - initial velocity)/time

=100/5

= 20m/s

Answer 2

$\huge{\bf{\green{\underline{\underline{Answer :- }}}}}$

initial velocity (u) = 50 m/s

final velocity (v) = 150 m/s

time (t) = 5 sec

acceleration (a) = ?

v = u+at ............ (equation of motion)

$\implies a = \frac {v-u}{t}$

$\implies a = \frac {150-50}{5}$

$\implies a = \frac {100}{5}$

${\bf{\blue{\underline{so ,\: acceleration \:of\: the \:car = 20 m/s^2}}}}$

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Other equations of motion :

$\sf s = ut + \dfrac {1}{2} at^2$

$\sf v^2 - u^2 = 2as$

$\sf s = \dfrac {1}{2} t(v+u)$

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hope it helps !