Question

22. A car moving at a speed of 50km/h after 2s it is moving at a 60km/h. calculate the acceleration of the car. a. 1399 m/s2 130m/s. b. 1.39 m/s? c. 13.9 m/s​

Answer 1

Answer:

a=v-u/t

a=accleration

u=initial velocity

t=time

v=final velocity

t=2

u=50kg/h

=50×18/5

=900/5=180m/s

v=60km/h

=60×18/5

=1080/5=516m/s

a=v-u/t

=516-180/2

=336/2

=168m/s

Answer 2

Explanation:

• Here

☆ u = 60 km/hr

= 60×5/18 m/sec

= 250/18

= 13.8 m/sec

☆ v = 60 km/h

= 60×5/18

= 300/18

= 16.66 m/sec

☆ a = v - u / t

= 16.66 - 13.8 / 2

$= {1.38}^{2}$

your answer

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