The jet car is originally traveling at a velocity of 10 m/s when it is subjected to the acceleration shown. When t = 0, s = 0. Suppose that a₁ = 5 m/s² , a₂ = -3 m/s² , and t′′ = 15 s

Determine the car's maximum velocity.

Express your answer to three significant figures and include the appropriate units.

 

Vmax = 85 m/s

 

Determine the time t' when the car stops.

Express your answer to three significant figures and include the appropriate units.

 

t'=43.3