Ablock is pulled across a flat surface at a constant speed using a force of 50 newtons at an angle of 60 degrees above the horizontal. the magnitude of the friction force acting on the block is:

show the wavelengths of a wave. show the crests of a wave.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.