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An elevator has a mass of 2500 kg. How much power is needed
An elevator has a mass of 2500 kg. How much power is needed to lift the elevator a distance of 50. m in 30. s? Show all work, including the equation and substitution with units.… read more
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What average force is required to stop an 1100 kg car in 8.0
What average force is required to stop an 1100 kg car in 8.0 seconds if it is traveling at 90 km/h?… read more
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What average force is required to stop an 1100 kg car in 8.0
What average force is required to stop an 1100 kg car in 8.0 seconds if it is traveling at 90 km/h?… read more
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A car initially contains just its driver. The combined mass
A car initially contains just its driver. The combined mass of car and driver is 962 kg. When the gas pedal is pushed down all the way, the car reaches its maximum acceleration of 3.6 m/s2. If the dri… read more
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1. What is the momentum of a 100 kg football player who is
1. What is the momentum of a 100 kg football player who is moving at 7 m/s? 2. A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its momentum? 3. What is the momentum of a 35 kg… read more
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1. A Merry-go-Round in an amusement park makes 4 revolutions
1. A Merry-go-Round in an amusement park makes 4 revolutions per minute. If the apparatus has a radius of 6.0 meters, what is the velocity of a point on the outer edge of the ride? b. What is the size… read more
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1. Alamogordo and Cloudcroft (both towns in New Mexico) are
1. Alamogordo and Cloudcroft (both towns in New Mexico) are 19.5 miles apart via US Hwy 82, a steeply uphill, twisting mountain road. An 18-wheeler makes the trip in 45 minutes. What is the truck's av… read more
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1.What is the force needed to stop a piece of heavy equipment
1.What is the force needed to stop a piece of heavy equipment moving at 10 km/h in 6 sec if its mass is 5000 kg ? 2. what force is required to slow a 1350-kg car traveling 90 km/h within 4 sec? how fa… read more
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A person with a mass of 64 kg experiences a normal force of
A person with a mass of 64 kg experiences a normal force of 1,089 Newtons when at the bottom of a ferris wheel which is moving at 37 m/s at the bottom. What is the maximum speed the ferris wheel can m… read more
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RRJha, It is about 15 minutes until 3 30. I wanted to give
RRJha, Please let me know when you are ready. I wanted to give you a brief overview as to what will happen. I will be working on the questions at the same time as you. This means I will give you the q… read more
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A 1500 kg car at 35 mile/hr collides with a tree and comes
A 1500 kg car at 35 mile/hr collides with a tree and comes to stop in 48 cm, what is the average impact force? If the 75 kg driver, with the help of air bag, stops with distance 2.25 m , what is the a… read more
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which of the following has the largest momentum relative to
which of the following has the largest momentum relative to earth? a pickup truck speeding along a highway the science building on campus a tightrope walker crossing Niagara falls a dog running down t… read more
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People have survived falls from great heights, provided ...
People have survived falls from great heights, provided that they landed in snow or foliage or some other such material to cushion the impact. A typical male adult of mass 100kg landing flat on his ba… read more
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Imagine that the coefficient of static friction s between ...
Imagine that the coefficient of static friction µs between a 25-kg box and the floor is .55. How hard would you have to push on the box to get it moving? Imagine that you have to exert a horizontal fo… read more
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An object is sliding at 2 m/s down an incline that makes an
An object is sliding at 2 m/s down an incline that makes an angle of 30 degrees with respect to the horizontal. If the gravitational interaction contributes 10 kg m/s of downward momentum to the objec… read more
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1) What is the kinetic energy of a 1,500.0kg car with a ...
1) What is the kinetic energy of a 1,500.0kg car with a velocity of 72.0 km/h? b) how much work must be done on this car to bring it to a complete stop? 2) Compare the kinetic energy of a 800.0 kg car… read more
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1. At a certain time ,a car is 150m due west of your
1. At a certain time ,a car is 150m due west of your house. If it is traveling with a constant velocity of 30 m/s 30 degrees south of east, what are the magnitude and the direction of its position rel… read more
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A man of mass 71 kg drops to a concrete patio from a ...
A man of mass 71 kg drops to a concrete patio from a window 1.2 m above the patio. He neglects to bend his knees on landing, taking 2.0 cm to stop. (a) What is his average acceleration from when his f… read more
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