Question Pro'ectile Motion A projectile is launched from a cliff that is 42 m above ground. The initial velocity of the projectile is 70.0 m/s and it is fired at an angle of 25 above the horizontal. (a) Determine the horizontal range of the rojectile. *0) Determine the velocity of the projectile as it strikes the ground. Pro'ectile Motion Recall the equation for range of a projectile: ('3 sin 29 d.\\ = - 0 Using this equation, explain why for (almost) any given range, there are two possible angles. What does this tell you about the maximum range? Relative Velocity Two kayakers, Aand B, live on opposite sides of a 450.0 m wide river that flows east at 0.75 m/s. A lives on the north side and B lives on the south side. They both set out to visit a mutual friend X who lives on the north side at a point 150.0 m upstream fromA and 150.0 m downstream from B. Both kayakers can travel at 2.5 m/s through the water, Which kayaker will arrive at X first, and by how much time (in seconds)? Relative Velocit You are swimming across a river with a strong current that goes from West to East. Explain what direction you would have to travel to ensure you end up exactly North from where you started. Screenshot of Solution I Explanation Forces in a 2D Plane Two boxes, mj = 3.0 kg and m2 = 5.0 kg, are attached by a rope over a pulley. The incline is 3000" from the horizontal plane and the coefficient of kinetic friction is 0.17. _ - so\" (a) Draw a free body diagram for the entire system. (to) Determine the acceleration in the system when the blocks begin to slide. (c) Determine FT (force of tension). Forces in a 2D Plane Consider an object on a flat, horizontal surface. Describe a situation when: (a) The normal force and force due to gravity and equal and opposite (b) The normal force and force due to gravity are not equal