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A 15 kg box is pulled horizontally by a 20 N force on a frictionless surface. The box moves a distance of 10 m. What is the work done on the box by the force? What is the change in kinetic energy of the box?
Car A uses tires for which the coefficient of static friction is 1.1 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 25 m/s. Car B uses tires for which the coefficient of static friction is 0.65 on the s..
A 21.8-kg box rests on a frictionless ramp with a 15.7° slope, what is the smallest force F the mover will have to exert to move the box up the ramp
A car accelerates uniformly from rest and covers a distance of 71 m in 5.6 s. If the diameter of a tire is 42 cm, 1.) Find the angular acceleration of the wheel.
One tire is inflated to a pressure of 40 and goes a distance of 18.0 ; the other is at 105 and goes a distance of 93.4. Assume that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be = 9.80.
For the motion from the initial free until the piece of wood comes to rest, what is the total amount of work completed by friction.
An arrow is launched vertically upward from a crossbow at 97.9 m/s. Ignoring air friction, what is its instantaneous speed at the end of 10.0 s of flight? What is its average speed up to that moment? How high has it risen? What is its instantaneou..
A pilot knows a 7.00 km distance lies between two landmarks A and B on the level ground below. When he is over landmark A, What is the airplanes altitude
6 kg of a substance undergoes a process from 1.00 MPa, 0.50 m^3 to 500 kPa, Find the work in kJ for the path given below and Find the heat transfer for the process in Btu. PV^1.6 = constant
What is the force on the 1 nC charge at the bottom. how far will it skid if it is traveling at 120 km/h when its brakes lock.
After a golf ball is hit it takes off with an initial speed of 26.2 m/s and at an angle of 39.5° with respect to the horizontal. The golf field is flat and horizontal.
A 2.4kg toy locomotive is pulling a 1.6kg caboose. The frictional force of the track on the caboose is 0.54N backward all along the track. If the train is accelerating forward at 3 m/s2, what is magnitude of the force exerted by the locomotive on ..
How much time is necessary for the torso to come to rest
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