Question

A car starting from rest accelerates uniformly at 4.3 m/s^2 for 5.0 seconds. How far does the car move?

Answer 1

Answer:

Vf = 21.5 [m/s]

Explanation:

To solve this problem we must use the following kinematics equation:

$v_{f}= v_{i} +(a*t)$

where:

Vf = final velocity [m/s]

Vi = initial velocity = 0

a = aceleration = 4.3 [m/s^2]

t = time = 5 [s]

Now replacing:

Vf = 0 + (4.3*5)

Vf = 21.5 [m/s]