"Physics Problems, exercises, etc." . . . . "Centripetal force." . . "Tangental speed and centripetal force"@en . "Instructional films"@en . . "This program demonstrates, the difference between tangental and centripetal acceleration and how to find speed, distance and time as Jason Gibson works through specific problems step by step to completion, to help students gain a better understanding of the concepts of tangential speed and centripetal force."@en . . . . "Problems and exercises"@en . . . . . "Acceleration (Mechanics)" . . "Physics." . .