Question

a car starts at a speed of 3.5m/s and picks up speed for 2.8 seconds until it is traveling 7.2 m/s; the car traveled 15.0 meters. What is the car's acceleration

Answer 1

Answer:

a = 1.32 [m/s²]

Explanation:

To calculate this problem we can use the following equation of kinematics.

$v_{f}=v_{o}+a*t$

where:

Vf = final velocity = 7.2 [m/s]

Vo = initial velocity = 3.5 [m/s]

t = time = 2.8 [s]

a = acceleration [m/s²]

$7.2=3.5+a*2.8\\2.8*a=3.7\\a=1.32[m/s^{2} ]$