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Questions (7)

A revolutionary cannon, with a mass of 2000kg, fires a 20kg ball horizontally. The cannonball has a speed of 140m/s after it has
1. 2 answers
2. 1,369 views
A space station in the form of a large wheel, 200m in diameter, rotates to provide an "artificial gravity" of 9.9m/s^2 for
1. 3 answers
2. 1,020 views
A curve of radius 60m is banked so that a car traveling with uniform speed 70km/hr can round the curve without relying on
1. 1 answer
2. 627 views
A curve of radius 60m is banked so that a car traveling with uniform speed 70km/hr can round the curve without relying on
1. 1 answer
2. 673 views
A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is
1. 3 answers
2. 2,326 views
a ball of mass 0.2 kg, initially at rest, is kicked directly toward a fence from a point 20m away. The velocity of the ball as
1. 1 answer
2. 675 views
An airplane flies at airspeed (relative to the air) of 400km/h. The pilot wishes to fly due North (relative to the ground) but
1. 1 answer
2. 1,108 views

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