Question

Two racing cars acquire velocities 18 kmph and 36 kmph in 0.5s. If they are accelerated
uniformly from rest, find their accelerations.​

Answer 1

Answer:

1st car acc = 10ms , 2nd car acc = 20 $ms^-2$

Explanation:

1st car

Given

initial velocity = 0

final velocity = 18 kmph

time =0.5s

a=v-u/t

= (18x 5/18)/0.5

=5/0.5

a = 10 $ms^-2$

2nd car

GIven

initial velocity = 0

final velocity = 36 kmph

time =0.5s

a=v-u/t

= (36 x 5/18) / 0.5

=10/0.5

a = 20 $ms^-2$

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