An F-150 truck weighing 5000 lbf (on Earth) traveling in a straight line at 60 mph comes to a complete stop in 5.3 seconds.

a. Calculate the acceleration (ft/s2) of the truck. (The negative sign indicates the direction of the velocity change: slowing down) Report to 1 decimal place.

b. Find the force (lbf) needed to stop the truck. Report to nearest whole number. (hint: use the absolute value of acceleration)

c. If it takes 158 ft to stop the pickup (assuming ideal braking conditions), calculate the total work done (ft·lbf) by the brakes to stop the truck.

Answer rating: 100% (QA)

a To find the acceleration we can use the formula acceleration final velocity initial velocity time ... View the full answer