SOLUTION: A car advertisement states that a certain car that Emily Miller loves can accelerate from rest to 70 km/h in 7 seconds. Find the car’s average acceleration.

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Question 858737: A car advertisement states that a certain car that Emily Miller loves can accelerate from
rest to 70 km/h in 7 seconds. Find the car’s average acceleration.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A car advertisement states that a certain car that Emily Miller loves can accelerate from
rest to 70 km/h in 7 seconds. Find the car’s average acceleration.
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a = (v2 - v1)/t
a = (70 - 0)/7
a = 10 km/hr/sec
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It's better to use as few units as possible.
10 km/hr = 10 km*1000 m/km/(1 hr*3600 sec/hr) = 25/9 m/sec
a= 25/9 m/sec/sec