a. What constant acceleration, in SI units, must a car

Shelia Lawrence 2021-12-24 Answered
a. What constant acceleration, in SI units, must a car have to go from zero to 60 mph in 10 s?
b. What fraction of g is this?
c. How far has the car traveled when it reaches 60 mph? Give your answer both in SI units and in feet.
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Expert Answer

John Koga
Answered 2021-12-25 Author has 33 answers

The initial velocity is zero, the final velocity is given by
vf=60mih(16091 mi)(1 h3600 s)
=26.8 ms
According to the kinematic equation,
v=u+at
Solve for a
a=vut
=26.8010
=2.68 ms2
It can be written as,
ag=2.68 ms29.81 ms2
=0.27 g
xg=xi+vit+12at2
xf=0+0+12×(2.68)(10)2
=134 m(100 cm1 m)(1 ft30.48 cm)
=439.6 ft

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