Recent content by tyfiem

A curve of radius 60m is banked so that a car traveling with uniform speed 70 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 9.8m/s^2. What is the angle of the curve? im using a=v^2/r, but when I get the...

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 it leaves the kicker's foot is 20m/s at angle of 40º above the horizontal ground. The top of the fence is 4m high. THe kicker's foot is in contact with the ball for...