A dog runs down his driveway with an initial speed of 5 m/s for 8 s, and then uniformly increases his speed to 10 m/s in 5 s.
A) what was his acceleration during the 2nd part of the motion?
B) how long is the driveway

The acceleration during the second part is 1 m/[tex]s^{2}[/tex] and the length of driveway is 90 meters.We have a Dog running on driveway.We have to Determine - His acceleration during the 2nd part of the motion. How long is the driveway.What is Acceleration?Acceleration is the rate of change of velocity with respect to time.a = dx/dtAccording to the question -The acceleration during the 2nd part is -  [tex]$\frac{10-5}{5}[/tex] = 1 m/[tex]s^{2}[/tex]Length of driveway -  5 x 8 + 10 x 5 = 90 meters.Hence, the acceleration during the second part is 1 m/[tex]s^{2}[/tex] and the length of driveway is 90 meters.To solve more questions on Kinematics, visit the link below-https://brainly.com/question/17246722#SPJ2

Acceleration is given by change in velocity divided by change in time, so his acceleration should just be (10-5)/5 which is [tex] \frac{5}{2} \frac{m}{s^{2}} [tex]The driveway is 40 meters plus 225/4. You can do the math.