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Question1
If you drop a rock from a height of 7.1 m, it accelerates at g and strikes ground 1.20374 s later.
If you drop the similar rock from half that height, what will be its acceleration? The acceleration of gravity is 9.8 m/s^2.
Question2
A 400g lemming waddles horizontally off a small 4.9m high cliff with a horizontal velocity of 0.5m/s.
a. How far from base of the cliff will the lemming land?
b. What will be lemming's speed just before landing?
c. What is lemming's kinetic energy just before landing?
A skier leaves the end of a horizontal ski jump at 22. m/s and falls 3.20 m before landing. how far horizontally does the skier travel in the air before landing
Bronco Brown is mowing his lawn. He applies a force F along the handle of the lawnmower as shown. Bronco moves the mower at constant velocity.
A 64kg human sprinter can accelerate from rest to 10 m/s in 3.0s . During the same time interval, a 28kg greyhound can go from rest to 20 m/s. What is the average power output of the human
What is wind velocity
Water flows from a fire truck through a hose that is 10.7 cm in diameter and has a nozzle that is 2 cm in diameter. what is the gauge pressure in the truck
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, & a power of +1.83 diopters in the close-vision part. Compute the near & far points of this person's uncorrected visio..
Assume you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 m/s. The river has a current that runs at a speed of 1m/s.
A ball with mass 2.5 kg is moving in outer space with a velocity of 6.0 m/s horizontally, Find the final velocity of the pair
Stuck in the middle of a frozen pond with only your physics book, you decide to put physics in action and throw the 3.75-kg book. how fast do you then slide across the ice
find the potential energy at each location below. How far from the point of the drop will the rock hit the ground.
A 0.5 kg dart is fired vertically from a spring gun that has spring constant of 4000 N/m. Determine maximum height reached by dart.
A 52% efficient device uses chemical energy to generate 570J J of electric energy. How much chemical energy is used
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