SOLUTION: A car can be stopped from initial velocity 84 km/h to rest in 55 meters. Assuming constant acceleration, find the stopping time. is it 4.72 seconds?

Question 403251: A car can be stopped from initial velocity 84 km/h to rest in 55 meters. Assuming constant acceleration, find the stopping time.
is it 4.72 seconds?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A car can be stopped from initial velocity 84 km/h to rest in 55 meters. Assuming constant acceleration, find the stopping time.
is it 4.72 seconds?
---------------
Its average speed during the acceleration = 42 km/hr
42 km/hr = 42000/3600 m/sed = 35/3 m/sec
--------------
55 m/(35/3) m/sec =~ 4.714 seconds

RELATED QUESTIONS
A car advertisement states that a certain car that Emily Miller loves can accelerate from (answered by Alan3354)

a nitro-fueld dragster can accelerate 0 to 440 km/h in 5.0 s. assuming the vehicle's... (answered by Alan3354)

Please can you answer this question A bus travels uniformly from 54 km/h to 72 km/h in (answered by Alan3354)

A car accelerates from rest to a velocity of 5 meters/second in 4 seconds. What is its... (answered by MathLover1)

Use 9.8 m/s2 for the acceleration due to gravity. For Newton's Law calculations, mass... (answered by solver91311)

A train accelerates uniformly from rest for 180.0 seconds. During that time the train... (answered by KMST)

A car have a velocity 72km in 10 second after starting from rest, find acceleration an... (answered by Fombitz)

A sports car accelerates from rest to 95km/h in 6.2s. What is the average acceleration in (answered by ankor@dixie-net.com)

a is acceleration v0 is initial velocity (speed), v is final velocity t0 is initial (answered by solver91311)