1. A skateboarder starts at point A and rises to a height of 2.64 m above the top of the ramp at point B. What was the skateboarders initial speed at A? (Neglect friction and air-resistance or wind force)
  2. Assume the track is a half-circle with 4.00 m radius. A 57 kg skateboarder starts from rest at the top of the ramp. What is the normal force exerted on the skateboarder at the bottom of the circular arc?

Back...