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Problem: What is the work done by a car's braking system when it slows the 1500-kg car from an initial speed of 96 km/h down to 56 km/h in a distance of 55 m?
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Two different electrical devices have the same power consumption, but one is meant to be operated on 120-V AC and the other on 240-V AC. What is the ratio of their currents
consider a square of side 61 cm. let one corner point p be charge-free while the other three of the four corners have
Find the initial acceleration of a rocket if the astronauts on board experience eight times their normal weight during an initial vertical ascent
a 0.2kg steel ball is dropped straight down onto a hard horizontal floor and bounces straight up. the balls speed just
A long jumper leaves the ground at an angle of 20.0o to the horizontal and at a speed of 11.0 m/s. How long does he take to reach maximum height
a small aircraft is headed due south with a speed of 57.8 m/s with respect to still air. Determine the directional angle is relative to due south
A whale of 18 meter in length and mass 4000 kilogram leaps straight out of the water such that half its body length is above the surface. determine how fast was it going at that moment
by measuring the go-and-return time for a laser pulse to travel from an earth-bound observatory to a reflector on the
A 40 kg child slides down a playground slide at a constant speed. The slide has a height of 3.6 m and is 7.6 m long. find the magnitude of the kinetic friction force acting on the child
question1consider a tube filled with air at 17 degc and closed at both ends. let lengthnbspof the tube is 70 cm.nbsp a
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, find the absolute pressure PB in the bulb
A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of 3.30 m/s. find the distance the sled moves before it stops
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