Social Sciences, asked by muditrajsingh, 9 months ago

A car increases its speed from 15 km/h to 30km/hr. in 12 seconds. Its acceleration is
(i) 30 m/s2 (ii) 0.3 m/s2 (iii) 50 m/s2 (iv) 18 m/s2

Answers

Answered by singhamanpratap0249
12

Answer:

average speed=30+15/2

45/2

22.5 km/h

22.5×5/18=6.25m/sec

time=12sec

from Newton's first law

v=u+at

6.25=a×12

a=6.25/12

ans b

Answered by 21rishubh
1

Answer:

a car increases its speed from 15km/h to 30km/hr in 12 seconds its acceleration is a. 30m/s².

Explanation:

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