Automobile manufacturer claims its sports car will accelerate from rest to a...

[Steve]

...speed of 42.3 m/s in 8.4 s? Assume that the acceleration of the car is
constant.
What is the distance the car travels in the first
8.4 s?
What is the speed of the car 9.32 s after
it begins its motion, assuming it continues to
accelerate at the same average rate?

 

[Steve]

a = 42.3/8.4 = 5.0357 m/s²

d = ½a*t² = 177.66 m

V9.32 = a*t = 5.0357*9.32 = 49.93 m/s

 

[Steve]

a = 42.3/8.4 = 5.0357 m/s²

d = ½a*t² = 177.66 m

V9.32 = a*t = 5.0357*9.32 = 49.93 m/s