A van is driven at 60 km/h and is brought to a full stop with constant deceleration in 7seconds. If the total car and driver mass is 1.825kg find the necessary force.
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- O-A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient of rolling friction as 0.46 and acceleration due to gravity as 10 m/s2. On applying brakes to reach a speed of 10 m/s, Find the required braking distance (in m, round off to nearest integer) along the horizontal.Q-A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient of rolling friction as 0.46 and acceleration due to gravity as 10 m/s2. On applying brakes to reach a speed of 10 m/s, find the required braking distance along the horizontal.1. In traveling a distance of 3km between points A and a car is driven at 100kph from A to B for t seconds and at 60kph from C to D also for t seconds. If brakes are applied for 4 seconds between B and C to give the car a uniform deceleration, calculate the t and the distance between A and B. 1/
- A car starts from rest, and accelerates at a uniform rate to a velocity of 40 m/s in 15 secs. If the car is moving in a circular track with a diameter equal to 1.5 mi, and assuming constant tangential acceleration, 1. Determine the car's tangential acceleration at the instant when the velocity is 40 m/s. 2. Determine the car's normal acceleration at the instant when the velocity is 40 m/s. 1 3. What was the car's acceleration?Each tire on the 1425-kg car can support a maximum friction force parallel to the road surface of 2170 N. This force limit is nearly constant over all possible rectilinear and curvilinear car motions and is attainable only if the car does not skid. Under this maximum braking, determine the total stopping distance s if the brakes are first applied at point A when the car speed is 18 m/s and if the car follows the centerline of the road.Calculate the capacity (vehicle per hour) of the road when reaction time of the driver is 2 seconds. The design speed is 80 kmph and average length of the vehicle is 6 m. Take coefficient of friction as 0.35.
- The rated speed of a 200-meter banked highway curve is 50 km per hour. the radius of the highway curve is 250 meters and the coefficient of friction between the tires and the road surface is 0.50. What is the maximum speed at which the vehicle can round the curve without skidding? Express your answer in km per hour.An auto, equipped with only front wheel brakes, has a wheelbase of 120 in. with its c.g. located 60 in. ahead of the rear wheels and 36 in. above the pavement. If f = 0.80 at the tires, compute the minimum distance in which the auto can be brought to rest from a speed of 60 mph if the driver’s reaction time before applying the brakes is 3/4 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 3320N
- Initially the car travels along a straight road with a speed of 35 m/s. If the brakes are applied and the speed of the car is reduced to 10 m/s in 13 s, determine the constant deceleration of the car.The brakes of a car are applied, causing it to slow down at a rate of 10 ft/s. Knowing that the car stops in 300 ft, determine (a) how fast the car was traveling immediately before the brakes were applied, (b) the time required for the car to stop.A 1100 kg passenger vehicle originally traveling on a straight and level road gets onto a section of the road with a horizontal curve of radius 255 meter. Assume that the vehicle is traveling at sea level and has a front cross-sectional area of 3.50 sq. m. If the vehicle was originally traveling at 58 kph, calculate the following: 1. Additional horsepower on the curve the vehicle must produce to maintain the original speed 2. Total resistance force on the vehicle as it traverses the horizontal curve 3. Total horsepower