SOLUTION: Jacob is driving at a speed of 55 kilometers per hour when he sees a speed limit sign. His car takes 10 seconds to decelerate to a speed of 40 kilometers per hour. What is the aver

Question 801030: Jacob is driving at a speed of 55 kilometers per hour when he sees a speed limit sign. His car takes 10 seconds to decelerate to a speed of 40 kilometers per hour. What is the average acceleration of the car? Choose the closest answer.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Jacob is driving at a speed of 55 kilometers per hour when he sees a speed limit sign. His car takes 10 seconds to decelerate to a speed of 40 kilometers per hour. What is the average acceleration of the car?
-------------
10 seconds = 10/3600 hours = 1/36 hr
-----
a = (55-40)/(1/36)
a = 540 km/hr/hr

RELATED QUESTIONS
A car traveling at a speed of 29 m/s Suppose the speed limit is 76 km/h. how many... (answered by ankor@dixie-net.com)

If Jacob bikes 10 kilometers in 17 minutes, his speed is kilometers per hour. (Round... (answered by MathLover1)

if Jacob bikes 10 kilometers in 26 minutes, his speed is ___________ kilometers per... (answered by fractalier)

A car is traveling at a speed of 63 kilometers per hour. What is the car's speed in... (answered by ankor@dixie-net.com)

Tim is driving a truck to chicago. He is driving at 55 miles per hour and has to hit the (answered by xcentaur)

Corbin was driving his car at a speed of r miles per hour, when he had to stop suddenly.... (answered by ankor@dixie-net.com)

harry drives his car for 15 miles at a certain speed. he then increases his speed by 10... (answered by josgarithmetic)

Deandre is riding his bicycle. He rides at a speed of 6.4 kilometers per hour of 4 hours. (answered by josmiceli)

Melissa is driving a sports utility vehicle along the interstate at a constant speed of... (answered by checkley75)