q1: a cyclist brakes to a stop. his thinking distance was 1m and his braking distance was 3m. what was his overall stopping distance?
q2: a car driver notices that there is a red light coming up. he brakes and stops in a total distance of 52 metres. if his thinking distance was 15 metres, what was his braking distance?
q3: a car takes 76 metres to stop once a driver has noticed a hazard. if the thinking distance of the driver was 14m and the speed of the car was 8m/s how long did it take the brakes to slow the car down to a stop?
q4: a lorry travels 28m when stopping from a speed of 4m/s. if its braking distance was 18m, what was the driver’s reaction time?
q5: car 1 brakes to a stop on a dry road. car 2 does the same thing, at the same speed, on a road where it has been raining.

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

14. a body is projected with velocity vi from a. at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is