A car starts from rest and accelerates uniformly to a speed of 72 km. p.h. over a distance of 500 m. A further acceleration raises the speed to 90 km. p.h. in 10 seconds.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.

1.	A car starts from rest and accelerates uniformly to a speed of 72 km. p.h. over a distance of 500 m. A further acceleration raises the speed to 90 km. p.h. in 10 seconds.The brakes are now applied to bring the car to rest under uniform retardation in 5 seconds. Find the distance travelled during braking.
A.	200 m
B.	300 m
C.	225 m
D.	335 m
Answer» D. 335 m

Discussion

No Comment Found

Related MCQs

A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the tangential component of the acceleration of the mid-point of the bar after 5 seconds after the acceleration begins ?
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the normal component of the acceleration of the mid-point of the bar after 5 seconds after the acceleration begins ?
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at the end of the interval ?
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds.How many revolutions does the wheel make in attaining the speed of 2000 r.p.m.?a) 333.4b) 444.4c) 555.4d) 666.4
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. What is its angular acceleration?
A_HORIZONTAL_BAR_1.5_METRES_LONG_AND_OF_SMALL_CROSS-SECTION_ROTATES_ABOUT_VERTICAL_AXIS_THROUGH_ONE_END._IT_ACCELERATES_UNIFORMLY_FROM_1200_R.P.M._TO_1500_R.P.M._IN_AN_INTERVAL_OF_5_SECONDS._WHAT_IS_THE_NORMAL_COMPONENT_OF_THE_ACCELERATION_OF_THE_MID-POINT_OF_THE_BAR_AFTER_5_SECONDS_AFTER_THE_ACCELERATION_BEGINS_??$
A_horizontal_bar_1.5_metres_long_and_of_small_cross-section_rotates_about_vertical_axis_through_one_end._It_accelerates_uniformly_from_1200_r.p.m._to_1500_r.p.m._in_an_interval_of_5_seconds._What_is_the_tangential_component_of_the_acceleration_of_the_mid-point_of_the_bar_after_5_seconds_after_the_acceleration_begins_?$
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at the beginning?
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds.How many revolutions does the wheel make in attaining the speed of 2000 r.p.m.?
A car starts from rest and accelerates uniformly to a speed of 72 km. p.h. over a distance of 500 m. A further acceleration raises the speed to 90 km. p.h. in 10 seconds.The brakes are now applied to bring the car to rest under uniform retardation in 5 seconds. Find the distance travelled during braking.

Discussion

No Comment Found

Related MCQs

Reply to Comment