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
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
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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