Question

While entering a freeway, a car accelerates from rest at a rate of 4.8 m/s2 for 12.0 s. Hint: on all these kinematic problems, keep and check your units. Check whether the answer is reasonable. You can always check to see if your answer satisfies other kinematic equations.

Answer 1

Answer:

The car reaches the final speed of 207.36 km/h

As it is less than the top speed of many cars, Yes, the answer is reasonable

Explanation:

V = U + A*T. where

V is final velocity

U is initial velocity

A is acceleration

T is time

(0) + (12)(4.8) = 57.6 m/s

57.6 m/s = 207.36 km/h