The acceleration of a car that speeds up from 12 meters per second to 30 meters per second in 15 seconds- (a) 2.4 m/s2 (b) 1.2 m/s2 (c) 2m/s2 (d) 5.2 m/s2
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Answer:
B) 1.2 m/s^2
Explanation:
u = 12m/s
v = 30m/s
T = 15s
a = ?
now,
v = u +at
30 = 12 + a×15
18 = 15a
a = 1.2 m/s^2
the acceleration of a car with speeds up from 12 metre per second to 30 metre per second in 15 second is equal to 1.2 metre per second square
option B
Explanation:
Given,
initial velocity of a car is 12 metre per second.
The final velocity of a car is 30 metre per second.
The change in velocity is equal to 30-12= 18m/ sec
The time taken for the change is equal to 15 second
The rate of change of velocity is equal to 18/15 = 1.2 m/sec²
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