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You are standing 100. m north of your car when an alligator appears 20.0m north of you and runs toward you at 8.0 m/s. At the same moment you start to run towards your car at 5.0 m/s. Will you reach the car before the alligator reaches you?
A charging bull elephant with a mass of 5240 kilogram comes directly towards you with a speed of 4.55 m/s. When the ball bounces back toward you, evaluate what is its speed
The initial kinetic energy imparted to a 0.0200-kg bullet is 1200J. (a) Assuming it accelerated down a 1.00-m longrifle barrel, estimate the average power delivered to it during thefiring.
How many cubic centimeters are in a cubic kilometer? The speed of sound in air at sea level is around 340m/s. Express this speed in mi/hr. The speed of light in a vacuum is about 3108m/s. Express this speed in both mi/hr and miles per second.
An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. What was the tension in the cable when the craft was being lowered to the seafloor
A 5.4 m-long rod of (constant diameter 4.6 mm) is made of 2.0 m of copper and the remainder of aluminum, What is the temperature at the interface between the copper and aluminum
A ball of mass 0.440 kg moving east (+x direction) with a speed of 3.80 m/s collides head-on with a 0.580 kg ball at rest. what will be the speed and direction of each ball
Discuss the inherent design limitations of cell phone cameras from an optical perspective. Based on your observations, what improvements would you suggest to the camera designers?
One side of the roof of a building slopes up at 41.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. find the maximum height the rock reaches above the point where it was kicked
A water pipe having a 2.4 cm inside diameter carries water into the basement of a house at a speed of 0.95 m/s and a pressure of 174 kPa. What is the water pressure at the second floor
A spring with a spring constant of 500N/m is used to propel a .45kg mass up an inclined plane. find the speed of the mass as it reaches the top of the plane
A submarine of mass 2.1x 103 kg and initially at rest firesa torpedo of mass 260 kg. The torpedo hasan initial speed of 100.1 m/s. What is the initial recoil speed of the submarine in m/s?
the us currently uses about 27 quad of energy for transportation per year nearly all of which comes from petroleum.
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