A student stands on the edge of a cliff that is 300 m high and kicks a rock horizontally. How much time is required for the rock to hit the ground? A) 12.2 B) 7.8 C) 2.5 D) 9.2

Which type of microscope would allow the viewer to see ribosomes inside a cell?

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.