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A football is thrown with an initial upward velocity component of 15.0 and a horizontal velocity component of 17.5 . How high does it get above the ground? How far has the football traveled horizontally from its original position?
A 91kg water skier floating in a lake is pulled from rest to a speed of 12 m/s in a distance of 25 m.What is the net force exerted on the skier, suppose his acceleration is constant.
An airplane is flying with a velocity of 82 at an angle of 25 above the horizontal. When the plane is a distance 125 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog will ..
A meter stick is pivoted at the 0.50 m line. A 3kg object is hung from the 0.15-m line. Where should a 5kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?
A 5* 10^2 kg hot air balloon takes off from rest at the surface of the earth. The non conservative wind and lift forces take the balloon up, doing +9.70*10^4J of work on the balloon in the process. At what height above the surface of earth does th..
A force with a magnitude of 452N is used to bring an object with a mass of 56.0 kg moving at a velocity of 155m/s. How long will it take to bring the object to a full stop.
What torque must the fireman exert on the hose? That is, what is the rate of change of angular momentum of water.
A hunter aims directly at a target (on the same level) 113 m away. If the bullet leaves the gun at a speed of 255 m/s, by how much will it miss the aim.
A pair of speakers separated by 0.700m is driven by the same oscillator at a frequency of 662Hz. An observer, originally positioned at one of the speakers, begins to walk along a line perpendicular to line joining the speakers. (Assume the speed o..
Describe two different energy alternatives to fossil fuels in detail. Discuss how they work, how they compare with fossil fuels, and their relative advantages and disadvantages.
Determine the maximum speed that the car. A boy riding on the back of the truck throws a can of soda upward and catches the projectile at the similar location on the truck bed.
How much work is done in stretching the spring. Find out the constant acceleration of the car.
Compute magnitude of the average velocity
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