Ball horizontally projected from a height
If a ball is horizontally projected from a height (y) of 0.83m above ground. How long does it take to hit the ground, if g is 9.8m/s^2? (Hint: Assume the initial vertical velocity to be zero and use -y=-(1/2) gt^2).
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A golfer hits a ball, giving it a maximum height of 20 meters. The ball lands 130 meters away at the level which he hit it. What is the initial velocity (neglect air resistance)?
What minimum initial speed would be required to make it safely across the canyon? Express your answer in m/s and mph. Ignore air drag.
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Three vectors length A=67.0, B=39.3, and C=44.0. The angles are a=27.7 and b=54.2, and c points along the negative y-axis. determine the length of vector A-B+C
An airplane traveling at 400 mph makes a 90-degree turn about a 2000 ft radius. Calculate the average acceleration (in ft/s2) of the plane.
Pin A, which is attached to link AB, is constrained to move in the circular slot CD. Knowing that at t=0 the pin starts from rest and moves so that its speed increases at a constant rate of 20mm/s^2, determine the magnitude of its total accleratio
A rigid vellel with the volume of 10 m3 contains a water-vapor mixture at 400 kPa at 60 percent quality. The pressure is lowered to 300 kPa by cooling the vessel. Find the mass (vapor) at state 2.
Let the sign of Q2 be changed from positive to negative. At which position can the point charge q be placed now so that the net electrostatic force on it is zero?
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