a truck ( mass == 1000kg) is travelling at a speed of 5 0 m/s when...
a truck ( mass == 1000kg) is travelling at a speed of 5 0 m/s when the driver suddenly stops. The coefficient for kinetic friction between rubber and the floor u_k = 0.90. find the stopping distance for the folllowing cases. a) travelling up a 20 degree slope b) down a 30 degree slope c) on a level road
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a truck ( mass == 1000kg) is travelling at a speed of 5 0 m/s
when...
Consider a large truck carrying a heavy load, such as steel beams. A significant hazard for...
Consider a large truck carrying a heavy load, such as steel beams. A significant hazard for the driver is that the load may slide forward, crushing the cab, if the truck stops suddenly in an accident or even in braking. Assume, for example, that a 8,000 kg load sits on the flat bed of a 15,000 kg truck moving at 10.0 m/s. Assume that the load is not tied down to the truck, but has a coefficient of friction of...
A box (350 kg) sits inside the trailer of a semitruck traveling at a speed of...
A box (350 kg) sits inside the trailer of a semitruck traveling at a speed of 15 m/s (~ 33 mph). Suddenly, a car in front of the truck stops in the road. The driver of the truck hits the brakes to bring the truck to a stop. Assume that the coefficient of static friction µs = 0.7 between the box and the floor of the trailer. Assume g = 10 m/s2. When the truck is slowing down, what is...
An automobile is travelling at 45 m/s on a horizontal road. If the coefficient of static...
An automobile is travelling at 45 m/s on a horizontal road. If the coefficient of static friction between the tires and the road is 0.12, find the minimum stopping distance of the car.
5. A runaway truck with a mass of 2100 kg strikes a car of mass 1350...
5. A runaway truck with a mass of 2100 kg strikes a car of mass 1350 kg, which was at rest before the collision. The car’s wheels are locked during the entire event, but the truck has no brakes, i.e., it is rolling freely on the road. The two vehicles move forward together, and the car’s tires leave skid marks for a distance of 1.5 m. Suppose that the coefficient of kinetic friction between the car’s tires and the road...
A large truck is carrying a heavy load. A significant hazard for the driver is that...
A large truck is carrying a heavy load. A significant hazard for the driver is that the load may slide forward, crushing the cab, if the truck stops suddenly in an accident or even in braking. Assume a 10,000 kg load sits on the flatbed of a 20,000 kg truck moving at 12 m/s. Assume the load is not tied down to the truck but has a coefficient of friction 0.5 with the flatbed of the truck. Calculate the minimum...
9. I am travelling along a flat highway at 60mi/hr (26.8 m/s). (a) If the coefficient...
9. I am travelling along a flat highway at 60mi/hr (26.8 m/s). (a) If the coefficient of friction between road and tires on a rainy day is 0.113, what is the minimum distance in which the car will stop? (b) What is the stopping distance when the surface is dry and the coefficient of friction is 0.565?
Traveling at a speed of 16.7 m/s, the driver of an automobile suddenly locks the wheels...
Traveling at a speed of 16.7 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.640. What is the speed of the automobile after 2.00 s have elapsed? Ignore the effects of air resistance. m/s
The driver of a car, weighing 10,000 N is travelling 30 m/s when she sees an...
The driver of a car, weighing 10,000 N is travelling 30 m/s when she sees an obstacle on the road and brakes. The coefficient of friction between her wheels and the road is 0.8. She stops in 10 s. How much work, in J, is done by the friction? Select one: a. 1, 200,000 b. can't tell c. 14,000 d. 120,000 e. 1, 400,000 The correct answer is: 1, 200,000 To determine how well a bicycle wheel is lubricated, the...
When examining the scene of an accident involving two cars, investigators measure 73-m-long skid marks of...
When examining the scene of an accident involving two cars, investigators measure 73-m-long skid marks of one of the cars, which nearly came to a stop before colliding. The coefficient of kinetic friction between rubber and the pavement is about 0.90. Estimate the initial speed of that car assuming a level road.
A block of mass m is moving on a horizontal surface with speed v when it...
A block of mass m is moving on a horizontal surface with speed v when it enters a rough patch and stops after traveling a distance L. What is the coefficient of kinetic friction between the block and the surface? O v2 /(29L) O v/ VgL O mv/(gL) O v2 /(L)
An automobile is travelling at 45 m/s on a horizontal road. If the coefficient of static friction between the tires and the road is 0.12, find the minimum stopping distance of the car.
9. I am travelling along a flat highway at 60mi/hr (26.8 m/s). (a) If the coefficient of friction between road and tires on a rainy day is 0.113, what is the minimum distance in which the car will stop? (b) What is the stopping distance when the surface is dry and the coefficient of friction is 0.565?
The driver of a car, weighing 10,000 N is travelling 30 m/s when she sees an obstacle on the road and brakes. The coefficient of friction between her wheels and the road is 0.8. She stops in 10 s. How much work, in J, is done by the friction? Select one: a. 1, 200,000 b. can't tell c. 14,000 d. 120,000 e. 1, 400,000 The correct answer is: 1, 200,000 To determine how well a bicycle wheel is lubricated, the...
A block of mass m is moving on a horizontal surface with speed v when it enters a rough patch and stops after traveling a distance L. What is the coefficient of kinetic friction between the block and the surface? O v2 /(29L) O v/ VgL O mv/(gL) O v2 /(L)
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