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**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.**