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A 1500 kg car moving on horizontal roa with speed of 30 m/s coasts to a stop in 1800 m, once the motor is turned off. What is the resultant force of air resistance and friction acting on the car?
You are practicing throwing darts in your dorm. You stand 3.33 m from the wall on which the board hangs. Calculate the time of flight of the dart
Compute the average intensity
A crate with mass 34.5kg initially at rest on a warehouse floor is acted on by a net horizontal force of 138N. What acceleration is produced
What is the magnitude of the auto's average acceleration.
An ultralight plane and pilot have a total mass of 150 kg. what is the net force acting on the plane and pilot
In the previous question, assume that the applies forces are 10N @ 41 degrees and that Force 2 acts at 138 degrees. Calculate the magnitude of the normal force from the floor
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Explain how much force must you exert to keep the pole motionless in a horizontal position?
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension cord
A train is travelling up a 4.5 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast without friction. a) How long does it take for the last car to come to rest momentarily? b) How far did the last car travel befo..
A lead bullet initially at 26.4oC melts just upon striking a target. calculate the speed of the bullet upon impact
What is an initial and final energy of the system energy? It takes .005 seconds for the bullet to embed itself into the block. What is an average impact force it experience.
A rocket fires two engines simultaneously. One produces a thrust of 760N directly forward while the other gives a thrust of 517N at an angle 39.6 above the forward direction
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