# A car starts from rest and accelerates uniformly to a speed of 72 km. p.h. over a distance of 500 m. Calculate the acceleration and the time taken to attain the speed. If a further acceleration raises the speed to 90 km. p.h. in 10 seconds, find this acceleration and the further distance moved. The brakes are now applied to bring the car to rest under uniform retardation in 5 seconds. Find the distance travelled during braking.

Question-AnswerCategory: Theory Of MachinesA car starts from rest and accelerates uniformly to a speed of 72 km. p.h. over a distance of 500 m. Calculate the acceleration and the time taken to attain the speed. If a further acceleration raises the speed to 90 km. p.h. in 10 seconds, find this acceleration and the further distance moved. The brakes are now applied to bring the car to rest under uniform retardation in 5 seconds. Find the distance travelled during braking.

A car starts from rest and
accelerates uniformly to a speed of 72 km. p.h. over
a distance of 500 m. Calculate the acceleration and
the time taken to attain the speed.
If a further acceleration raises the speed to
90 km. p.h. in 10 seconds, find this acceleration and
the further distance moved. The brakes are now
applied to bring the car to rest under uniform
retardation in 5 seconds. Find the distance travelled
during braking.