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A package is dropped from a helicopter moving upward at 14.50 m/s. If it takes 17.0 sec before the package strikes the ground, how high above the ground was the package when it was released (Disregard air resistance)?
Consider the following equations of motion. v = v0 + at ?x = v0t + (1/2) at^2 v2 = v02 + 2a?x (a) Can the equations above be used in a situation where the acceleration varies with time? (b) Can they be used when the acceleration is zero?
Rivets can be cooled before they are put in place, thus when they reach equilibrium temperature they are more firmly fixed in place. If the volume expansion of iron is 35.0 X 10-6 K-1
q1. a flight attendant pulls her 66 n flight bag a distance of 381 m along a level airport floor at a constant
The plane of a single circular loop with radius 0.1 m is held so the area vector of the loop is facing the North direction. what is the induced EMF in the loop
The club was in contact with a ball, initially at rest, for about 0.0018 s. find the average force exerted on the ball by the club
In a series RLC circuit, the resistance is 51 O, the capacitance is 39 µF and the inductance is 62 mH. Find the power supplied by the source
Winds pick up suddently,increasing the wave's amplitude to 6m. Explain how does this change in amplitude affect the wave's frequency and the amount of energy it transports?
A block with mass m = 18.7 kg slides down an inclined plane of slope angle 18.4o with a constant velocity. How far up the incline will the block move before coming to rest
the uss enterprise accelerates from rest at 100000 ms2 for a time of four seconds. how far did the ship travel in that
A hoodlum throws a stone vertically downward with an initial speed of 12.2 m/s from the roof of a building, 25.0 m above the ground. What is the speed of the stone at impact
A dog sitting 3.7m from a vertical mirror thinks its image is another dog. How far is the image from the dog
A car (m = 1610 kg) is parked on a road that rises 17° above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
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