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- 1. Consider a projectile problem. When you use the equations v = vo + at and y = y0 + 20yt + gt? you are making three assumptions. What are they?4. A projectile is launched from 20.0 m above ground level with an initial velocity of 35.0 m/s at 60.0° with respect to the horizontal. a) What is the object's maximum displacement in the y-direction? 35 m/s7. You launch a projectile at an initial speed of 41.2 m/s from the ground. After 5.40 seconds of flight, the projectile lands on the ground. At what angle above the horizontal was the projectile launched? 30.0 degrees 40.0 degrees 60.0 degrees 28.6 degrees
- What horizontal distance should the professor be at when the egg is released?1. A projectile is shot upward at a 60.° angle with the ground at 65 m/s. a) What is the velocity of the projectile after 1.7s? b) How far away from the launch point will the projectile land?24. A shell is fired with a horizontal velocity in the positive x direction at a speed of 330 m/s from the top of an 80- m high cliff. The shell strikes the ground 1330 m from the base of the cliff. What is the magnitude of the velocity of the shell as it hits the ground? Hint: you need to determine horizontal and vertical components of the final velocity first, from the kinematic equations, then calculate magnitude of the velocity. While the horizontal velocity remains constant, the vertical velocity does not. You will need time of flight to determine the latter. 80 m 1330 m A) 4.0 m/s B) 9.8 m/s B) 9.8 m/s C) 82 m/s D) 170 m/s (E) 332 m/s
- 10. A projectile is launched at t = 0.0 s from the edge of a cliff at a height (h) of 100 m above the water, with a velocity vo-100 m/s, O=60.0° above the horizontal. The projectile rises and falls into the sea. Determine the time it takes the projectile to reach the highest point in its trajectory, and the speed of the projectile at this point:e Time (s) Speed (m/s)< A) 5.10 100 В) 8.84 h C) 8.84 50.0 D) 17.7 86.6 E) 17.73. A bullet is fired with a horizontal velocity of 330 m/s from a height of 1.6 m above the ground. Assuming the ground is level, how far from the gun, measured horizontally, will the bullet hit the ground?2. An ultimate Frisbee player is running forward at 7m/s throws a Frisbee with a velocity of 30m/s at an angle of 46 degrees with the horizontal. What is the resultant speed and a direction of the throw?
- 1. A ball is thrown upwards with an initial velocity of ; = 44 m/s at an angle of above the horizontal. It travels a distance Ar = 75 m in the horizontal direction and lands at its original height. What is 0? (Hint 1: examine the ball's motion in both the x and y directions. Hint 2: you may need to use that sin(0) cos(0) = (1/2) sin(20). Hint 3: There are two solutions to this problem; try to find both.) Take g = 9.81 m/s² and show all your work.Q1. An archer aims at the bullseye of a target 50.0 m away. The arrow is at the same height as the bullseye. If the archer angles the arrow upwards at 12°, what must the arrow's initial speed be in order to hit the bullseye?6. A projectile is launched at ground level with an initial speed of 46.0 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.70 seconds later. What are the x and y distances from where the projectile was launched to where it lands? 7. A ball is thrown horizontally from the top of a 54.0-m building and lands 117.3 m from the base of the building. Ignore air resistance. (Assume the ball is thrown in the +x direction and upward to be in the +y direction.) (a) How long (in s) is the ball in the air? s (b) What must have been the initial horizontal component of the velocity (in m/s)? (Indicate the direction with the sign of your answer.) m/s (c) What is the vertical component of the velocity (in m/s) just before the ball hits the ground? (Indicate the direction with the sign of your answer.) m/s (d) What is the velocity (in m/s) (including both the horizontal and vertical components) of the ball just before it hits the ground? magnitude…