Verified answer

Explanation:

Initial velocity

= u = 10 km /hr

=

10

×

5

18

=

25

9

m/sec

Final velocity

= v = 15 km / hr

=

15

×

5

18

=

25

6

m

/

s

e

c

Time

= t = 6 sec

Let a is acceleration.

Step 2: Formula used

v = u + at

(first equation of motion)

Step 3: Finding the acceleration

v = u + at

25

6

=

25

9

+a*6

a = 0.22

m

s

−

2

So acceleration is, a = 0.22

m

s

−

2

.

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