Question

A car moving at 20 ms changes its velocity to 36 ms in 8 seconds. What is the acceleration of the car? ​

Answer 1

Answer:

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Explanation:

Acceleration is a measure of the change in velocity over time. The cars change in velocity is 40m/s−20m/s=20m/s Since this change in velocity takes place over 4 seconds, the cars acceleration is

=

Δt

Δv

=

4s

20m/s

=5m/s

2

Answer 2

Answer:

Given-

Initial speed of car (u) =20m/s

Final speed of car (v) = 36m/s

To find-

Acceleration (a) =?

Solution-

Since we know that

Acceleration=Change in velocity w. r. to time

so

a=(v-u) /t

a=(36-20)/8

a=16/8

a=2 ms⁻²