When an object speeds up from 10 m/s to 70 m/s in 3 s, then its
acceleration is
A. 20 m/s square
B. 21 m/s square
C. 26 m/s
D. 20 cm/s square
Other:
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When an object speeds up from 10 m/s to 70 m/s in 3 s, then its
acceleration is
A. 20 m/s square
B. 21 m/s square
C. 26 m/s
D. 20 cm/s square
Other:
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Answer:
a =v-u/t
a=70m/s-10m/s÷3sec..(here v=70m/s andu=10m/s)
a=60m/s/3sec
a=20m/s^2. ans..
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The answer may be :-
A) 20 m/s square