# What constant acceleration is required to increase the speed of a car from 26 mi/h to 56 mi/h in 5 s? What constant acceleration is required to increase the speed of a car from 26 mi/h to 56 mi/h in 5...

What constant acceleration is required to increase the speed of a car from 26 mi/h to 56 mi/h in 5 s?

What constant acceleration is required to increase the speed of a car from 26 mi/h to 56 mi/h in 5 s? (Round your answer to two decimal places.)

_____________ft/s^2

norcy | Certified Educator

calendarEducator since 2012

starTop subjects are Math and Science

Start by stating your necessary unit conversions:

1 hr = 3600 s

1mi=5280 ft

The required formula to calculate acceleration is:

a = (v2 - v1) / t

where, a = acceleration, v2 =  final speed, v1 =  initial speed, and t = time

 v1 = 26 mi/h * 1/3600h/s * 5280 ft/mi

= 38.13 ft/s

v2 = 56 ...

(The entire section contains 2 answers and 154 words.)

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justaguide | Certified Educator

calendarEducator since 2010

starTop subjects are Math, Science, and Business

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najm1947 | Student

Use the formula v=u+at where v is the final velocity, u is the initial velocity, a is acceleration and t is time

t = 5 seconds

v = 56 mph = 56*5280/3600 f/s

u = 26mph = 26*5280/3600 f/s

the formula can be reduced to a = (v-u)/t

a = (56*5280/3600-26*5280/3600)/5 = 8.80 f/s^2

Acceleration of car is 8.80 f/s^2

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