1. A coin is flicked horizontally off the top of a table. The diagram shows the horizontal and vertical components of the velocity after 0.45 s. What is the speed of the coin at this instant, given by the red vector? 2. Okay im rerally not sure how to do this. There is a diagram of two lines one going in teh horizontal direction and one in teh vertical so tehy have made a right angle and then a red line going diagonaly down through the right angle. I don't know what eqaution to use but I was thinking of when you use cos or sin to find teh horizontal or vertical components but I don't know where gravity and time fit into that?! 3. Im not sure how to do it.