Fde
| Front | What is a vector |
| Back | A quantity with a number and a direction |
| Front | How can there be a range of static frictions? |
| Back | The magnititude of static friction depends on factors like the amount of surface area in contact (more = higher). |
| Front | Which variable links the horizontal and vertical aspects of projectile motion? |
| Back | Time. Once the ball hits the ground, the motion stops, both horizontal and vertical. Therefore, time is the one variable that you can solve for in one dimension and then use in another. This fact will often provide the necessary variables for solving certain kinematics problems. |