Calculate the thermal energy dissipated from brakes in a 1200kg car that descends a 16? hill. The car begins braking when its speed is 90km/h and slows to a speed of 30km/h in a distance of 0.30km measured along the road.
Calculate the thermal energy dissipated from brakes in a 1200kg car that descends a 16? hill....
A car of mass 1000 Kg descends a hill inclined with horizontal by 30°, the car is traveling at 80 km/h is uniformly brought to rest over a distance of 40 m. Calculate using work-energy method the average braking force required. The resistance to the motion is 200 N. 40 0 = 30°
The 1930 kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1760 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are negligible. (Figure 1) Part A How much braking force does the cable car need to descend at constant speed? Express your answer with the appropriate units. Value Units Submit Request Answer...
Problem # 4 The 3000 kg cable car shown in figure descends a 200 m-high hill. In addition to its brakes, the cable car controls its speed by pulling a 2500 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are negligible. Counterweight 200 m 25° 35 A. Draw the free body diagrams of cable car (call it m,) and the counterweight (call it m2) mass. Draw component diagrams....
How much energy is dissipated in braking a 1200-Kg car to a stop from an initial speed of 30 m/s?
A car is traveling down a hill that makes an angle of 17° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is μK = 0.53. (a) Find the acceleration of the car. (Take down the ramp to be the positive direction) (b) How long does the car take to skid to a stop if its initial speed is...
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of −5.40 m/s2 for 4.15 s, making straight skid marks 63.3 m long, all the way to the tree. With what speed (in m/s) does the car then strike the tree? m/s (b) What If? If the car has the same initial velocity, and if the driver slams on the brakes at the same distance from the...
A car is traveling down a hill that makes an angle of 25° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is uk = 0.63. (a) Find the acceleration of the car. Take down the ramp to be the positive direction. Submit Answer Tries 0/5 (b) How long does the car take to skid to a stop if...
The driver of a car traveling on the highway suddenly slams on the brakes because of a slowdown in traffic ahead. A) If the car’s speed decreases at a constant rate from 74 mi/h to 50 mi/h in 3.0 s, what is the magnitude of its acceleration, assuming that it continues to move in a straight line? Answer is in mi/h^2 B) What distance does the car travel during the braking period? Answer is in ft
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of −5.00 m/s2 for 4.15 s, making straight skid marks 64.4 m long, all the way to the tree. With what speed (in m/s) does the car then strike the tree? i got 5.14 which is the the right answer but the second part im lost.. What If? If the car has the same initial velocity, and...
The driver of a car of mass M which is moving along a straight road with initial speed v0 sees a deer in her headlights, and reacts quickly, lifting her foot of the gas and applying the brake pedal with maximum force. The anti-lock brakes cause the largest possible static friction force to be applied on the tires by the road, which continue to roll so the car does not skid. The coefficient of static friction between the tires and...