How far above the target is this point
A gun shoots bullets that leave the muzzle with a speed of 346 m/s. If a bullet is to hit a target 116 m away at the level of the muzzle, the gun must be aimed at a point above the target. How far above the target is this point?
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What is the magnitude and direction of the car's acceleration as it slows down?
The length of a string is 300 cm. It is held ?xed at each end. The string vibrates in two sections; i.e., the string has two antinodes, and the string vibrates at 140 Hz. Find the wavelength.
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An electron with a speed of 3.28 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 1.26 × 103 N/C, traveling along a field line in the direction that retards its motion. (a) How far will the electr
A car has mass M = 1200 kg, and the driver has mass m = 70 kg. The car is initally traveling at 15 m/s. Then the driver steps on the brakes, and the car stops in 4 seconds. Calculate the force on the driver.
Find the magnitude of the normal force exerted on the crane by the ground while the wrecking ball is moving upward at a constant speed of v = 1.49 m/s.
During the acceleration, what is the force on the boat and trailer? (A positive force means a force in the direction of motion.)
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