What was the initial speed given to the rock
A soccer player kicks a rock horizontally off a 38.0 m high cliff into a pool of water. If the player hears the sound of the splash 3.3 s later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
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Tarzan plans to cross a gorge by swinging in an arc from a hanging vine, as shown in the figure. If his arms are capable of exerting a force of 1700 N on the vine, what is the maximum speed he can tolerate at the lowest point of his swing? His mas
A hotel elevator ascends 160 m with a maximum speed of 5.6 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. (a) How far does the elevator move while accelerating to full speed from rest?
A sledge weighs 1400 lb. it is oulled on level snow by a dog team exerting a horizontal force on it. The coefficent of kinetic friction between sledge and snow is 0.05. how much work is done by the dog team pulling the sledge 3000 fr at constant s
A curve of radius 50.9 m is banked so that a car traveling with uniform speed 64 km/hr can round the curve without relying on friction to keep it from slipping to its left or right. The acceleration of gravity is 9.8 m/s2 . What is θ?
She weighs 555 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the same. Find the tensions in the rope to the left and to the right
An airplane is heading due south at a speed of 560 km/h. If a wind begins blowing from the southwest at a speed of 70 km/h (average), calculate the following. (a) the velocity (magnitude and direction) of the plane relative to the ground
Chinese women in business and their social status, Describe the Chinese women's current situations in business and their current social status. 10 pages 10 references APA format
An 670kg car goes from a speed of 24 m/s in 6.0s. What average force is exerted by the brakes over this interval? Take the forward direction as postive.
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