What is the resultant velocity of the lightning bug
A lightning bug flies at a velocity of 0.25 m/s due east toward another lightning bug seen off in the distance. A light easterly breeze blows on the bug at a velocity of 0.25 m/s. What is the resultant velocity of the lightning bug?
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A 9300 kg boxcar traveling at 20 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 10 m/s. What is the mass of the second car?
Mercury is poured into a tall glass. Ethyl alcohol (which does not mix with mercury) is then poured on top of the mercury until the height of the ethyl alcohol itself is 129 cm. The air pressure at the top of the ethyl alcohol is one atmosphere. W
If the football has a mass of 0.56 kg and the time of contact with the ball is 0.027 s, what is the force exerted by the ball on the kicker's foot?
A projectile is launched from ground level at 100m/s at an angle of 45.0 degrees above the horizantal, and it is subject only to gravity.
At the position of the negative charge, what is the magnitude of the electric field due to the three positive charges? What is the magnitude of the attractive force on the negative charge?
A 28.0 {rm kg} block is connected to an empty 1.80 {rm kg} bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.48 and the coefficient of kinetic friction between the table an
The target stands 1.65m high. The arrow will travel with a velocity of 53m/s. At what angle must he aim the arrow so that it hits the target?
Two objects of masses m and 3m are moving toward each other along the x-axis with same initial speed v0. The object with mass m is traveling to the left, and the object with mass 3m is traveling to the right. They undergo an elastic glancing coll
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