Homework Answers
ANSWER ::
The definition of acceleration is a change in the rate of motion, speed or action. An example of acceleration is increasing your driving speed from 45 to 55 to merge with traffic.
Given that
deceleration=g/3
sliding friction=1/4
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2. (25 points) One hauling truck is traveling on a level road. The driver suddenly applies...
Picture taken from problem 13-35. A 2000 kg truck is traveling at 25 meters/second. The driver...
Picture taken from problem 13-35. A 2000 kg truck is traveling at 25 meters/second. The driver suddenly hits the brakes, causing the truck to slide on the road. The coefficient of friction between the truck and the road is fk = 0.32. Determine the distance the truck slides. (Notice: the box is irrelevant in this problem)
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...
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 suddenly andet or even in braking. Assume, for example, that a 15000-kg load sits on the flatbed of a 20000 kg truck moving at 10.0 m/s. Assume the load is not led down to the truck and esco rt of friction of 0.400 with the truck bed. (a) Calculate the...
A car is traveling down a hill that makes an angle of 25° with the horizontal....
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...
Police Report: There were two individuals involved in the accident. No other passengers were pres...
Police Report: There were two individuals involved in the accident. No other passengers were present and no other vehicles were involved. There was a truck of mass 1,936 kg traveling Southbound on H and a compact car of mass 1,077 kg travelling Northbound on HWY 26. A bystander claims to have watched the vehicles collide and slide Southbound off the road into a tall grassy ditch. The grass was determined to have a coeficient of friction of 0.6, while the...
Interactive Exercises 6.03: Frictional force on Inclined Surface (Making Deliveries on the Streets of San Francisco.)...
Interactive Exercises 6.03: Frictional force on Inclined Surface (Making Deliveries on the Streets of San Francisco.) A delivery truck with a flat bed drives around the city of San Francisco, which is famous for its steep hills. The truck carries a crate on its bed. Unwisely, the driver has not secured the crate to the bed, so the crate merely rests on the bed of the truck. See Fig. 6.3.1. rateretbad of truk Stoplight Stoplight a base of hll Interactive...
Consider the pickup truck with the following specs: Vehicle dimensions and weight: Curb Weight Manual (lb.)-...
Consider the pickup truck with the following specs: Vehicle dimensions and weight: Curb Weight Manual (lb.)- 8290 Front/Rear Axle Weights (lb.)- 4890/3400 Center of Mass Height (in)- 49 Wheelbase (in.) 172.40 Track Front (in.) 88.50 Track Rear (in.) -84.50 6 Speed Manual Transmission: st 5.79 2nd 3.30 3rd 2.10 4th .30 5th 1.00 Tires 225/70R20 Maximum Payload (lb.) 6120 Standard Towing (lb.) - 6000 Maximum Towing (Ib.) - 24,500 Max. trailer tongue load (lb.) 2500 6th 0.72 Final drive 4.88...
Picture taken from problem 13-35. A 2000 kg truck is traveling at 25 meters/second. The driver suddenly hits the brakes, causing the truck to slide on the road. The coefficient of friction between the truck and the road is fk = 0.32. Determine the distance the truck slides. (Notice: the box is irrelevant in this problem)
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 suddenly andet or even in braking. Assume, for example, that a 15000-kg load sits on the flatbed of a 20000 kg truck moving at 10.0 m/s. Assume the load is not led down to the truck and esco rt of friction of 0.400 with the truck bed. (a) Calculate 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...
Police Report: There were two individuals involved in the accident. No other passengers were present and no other vehicles were involved. There was a truck of mass 1,936 kg traveling Southbound on H and a compact car of mass 1,077 kg travelling Northbound on HWY 26. A bystander claims to have watched the vehicles collide and slide Southbound off the road into a tall grassy ditch. The grass was determined to have a coeficient of friction of 0.6, while the...
Interactive Exercises 6.03: Frictional force on Inclined Surface (Making Deliveries on the Streets of San Francisco.) A delivery truck with a flat bed drives around the city of San Francisco, which is famous for its steep hills. The truck carries a crate on its bed. Unwisely, the driver has not secured the crate to the bed, so the crate merely rests on the bed of the truck. See Fig. 6.3.1. rateretbad of truk Stoplight Stoplight a base of hll Interactive...
Consider the pickup truck with the following specs: Vehicle dimensions and weight: Curb Weight Manual (lb.)- 8290 Front/Rear Axle Weights (lb.)- 4890/3400 Center of Mass Height (in)- 49 Wheelbase (in.) 172.40 Track Front (in.) 88.50 Track Rear (in.) -84.50 6 Speed Manual Transmission: st 5.79 2nd 3.30 3rd 2.10 4th .30 5th 1.00 Tires 225/70R20 Maximum Payload (lb.) 6120 Standard Towing (lb.) - 6000 Maximum Towing (Ib.) - 24,500 Max. trailer tongue load (lb.) 2500 6th 0.72 Final drive 4.88...
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