In this chapter, we will study the motion in two dimensions further. First, we will analyze the path that any object takes when it is thrown in the air. We will see that all falling objects follows the same path. Then, we will analyze the motion that repeats itself, such as the motion of the propeller.

1. Projectile Motion 2. Circular Motion 3. Chapter 6 Quiz

		Section 1. Projectile Motion Objects launched are called projectiles. The flight of baseballs and basketballs are some examples of projectile motions. Let's analyze the projectile motion by breaking down the forces acting on the object. Suppose a ball was thrown horizontally at the velocity of 5 m/s. Let's think about forces acting on x-direction, or horizontal direction, only. We know that the ball was thrown at the velocity of 5 m/s. Because no other force acts on the ball in the air, we know the velocity will stay constant (because the net force is zero). Therefore, after 5 seconds, the ball is d = vt = 5 m/s * 5s = 25 m 25 m away. After 10 seconds, 5 m/s * 10 s = 50 m The ball is 50 m away.
		QUESTION: How far will the ball travel in 3 seconds in horizontal direction?