SOLVE THE FOLLOWING PROBLEM AND SHOW YOUR COMPLETE AND DETAILED SOLUTIONS. WRIT YOUR ANSWER ON A PAPER. ILLUSTRATE A FREE BODY DIAGRAM FOR BETTER UNDERSTANDING. 1. A projectile is launched from and returns to ground level, as Figure 3.21 shows. Air resistance is absent. The horizontal range of the projectile is measured to be R=175 m, and the horizontal component of the launch velocity is Vox-25 m/s. Find the vertical component Voy of the launch velocity. +25 m/s -R-175 m- Figure 3.21 A projectile, launched with a velocity whose horizontal component is +25 m/s, has a range of R 175 m. From these data the vertical component Voy of the initial velocity can be determined.

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”