Question

A more realistic car would cause the wheels to spin in a manner that would result in the ground pushing it forward with a constant force (in contrast to the constant power in Part A). If such a sports car went from zero to 31.0 in time 1.40 , how long would it take to go from zero to 62.0 ?

Answer 1

acceleration = 22.14 m/s²

time = 2.80 s

Step-by-step explanation:

given data

initial velocity = 31.0

final velocity =

time = 1.40

solution

we get here acceleration that is

acceleration =
`(v(final) - v(initial))/(t)` ...............1

acceleration =
`(31-0)/(1.40)`

acceleration = 22.14 m/s²

and

by kinematic equation of motion

v = u +at .........2

t =
`(62-0)/(22.14)`

time = 2.80 s