find the initial velocity of a car which is stopped in 11 s by applying brakes. the retardation due to brakes is 3 m/s
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- Determine the final velocity of car. Initial velocity-5 m/s acceleration=2 m/s2 time-2 sQI/ A car travelling at a constant velocity of 30 km/hr , see a man walking across the road (32m) ahead .The driver reaction time is 0.2 sec. , and the brakes are capable of production a deceleration of 1.2 m/sec² ,Calculate the distance from where the car stops to where the man crossing.Initially, the car travels along a straight road with a speed of 29 m/s. If the brakes are applied and the speed of the car is reduced to 19 m/s in 16s, determine the constant deceleration of the car in m per second square.
- Assume your car is traveling at 100 kph when a pedestrian suddenly crosses the street in front of your car. How far will your car travel before you can apply the brakes? Show your solution. What is the likelihood of running over the pedestrian?(Assume that you can bring the car to a stop in 10 m once you step on the brakes when you are driving at 50 )4. From a speed of 75 kph, a car decelerates at the rate of 500 m/min? along a straight path. a. How far in meters, will it travel in 45 seconds? b. What is the car's velocity after 45 seconds?A car is moving at a speed of 72 km/hr on road having 2% upward gradient. The driver applies brakes when he sees an obstruction. If his reaciton time is 1.5 seconds, assuming that the co-efficient of friction between the pavement and tyre as 0.15, calculate the distance traversed before the car finally stops.
- 1. Travelling with an initial speed of 70km/hr, a car accelerates at 600 km/h? along a straight road. How long will it take to reach a speed of 120 km/h? Also, through what distance does the car travel during this time? 2. A ball is thrown vertically into the air at 120 fps. After 3 sec, another ball is thrown vertically. What initial velocity must the second ball have to pass the first ball at 100 ft from the ground?4. A car starting from rest speeds up to 15m per sec with a constant acceleration of 1.2 m per sec per sec. If the total distance traveled is 300 m, find the total time required.ft ft when the brakes are applied. A bus travelling at 66 along a straight, level road decelerates at a constant rate of 22 sec sec2 Determine the time when the bus comes to a stop. A 0.3 sec В 0.9 sec 3 sec 9 sec
- A 1500kg vehicle subjected to safety test suddenly hit the brakes and stopped within 50 meters from a velocity of 100 kilometers per hour. If each wheels carries equal braking force, determine the force at each wheel. 50m V1= 100 kmn/h O 2890N O 3012N O 3502N O 3822N O2995N 3320NFind the initial velocity of car if final velocity 38 m/s and acceleration 4 m/s and time 4 sIn traveling a distance of 3.3 km between points A and D, a car is driven at 86 km/h from A to B for t seconds and 42 km/h from C to D also for t seconds. If the brakes are applied for 4.8 seconds between B and C to give the car a uniform deceleration, calculate t and the distance s between A and B.