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- 1. A grasshopper leaps into the air from the edge of a vertical cliff, as shown in figure below. Find (a) the initial speed of the grasshopper and (b) the height of the cliff. sin50.0° =0.76, cos50.0° =0.64 6.74 cm 50.0⁰ Not to scale -1.06 m2. A 10 kg object is launched at a 41-degree angle above the ground with a velocity of +8.5 m/s. Calculate the maximum height achieved by the ball.5.
- 11. The gravitational acceleration on Earth is b. 0 c. 9.8 m/s? 12. What should be the launching angle of a projectile to reach its maximum range? с. 45 ° b. 1 m/s2 d. -9.8 m/s? 0° b. 30 ° d. 60 ° а. 13. A football is kicked with an initial velocity of 30 m/s at an angle of 45° with the horizontal. Determine the maximum height of the football. а. 22.00 m b. 22.93 m c. 35.22 m d. 36.00 m3. An object, 26.9 m from a wall, is kicked with an initial velocity of 19.8 m/s at an angle e above the ground. What two values of 0 will the object be able to clear the 2.74 m high wall?1. Two projectiles, both with a velocity of 50 m/s, are thrown from the same spot. One of them is thrown with an angle of 60 degrees, and the other one is thrown with an angle of 45 degrees. However, they both land on the same spot on top of a brick wall. How high is the brick wall?
- 50. Tendo is playing soccer in their back garden. Tendo kicked the ball with a speed of 24.5m/s with an angle of 43.6° from the horizontal. What is the vertical velocity of the ball upon reaching the roof deck of the house, which is exactly the highest point of the ball's trajectory? Group of answer choices 0.0082m/s 0.082m/s 0.00082m/s No answer 0m/s1) A kicker lines up to make a field goal attempt. If the ball leaves the kicker's foot at an initial speed of 20 m/s and an angle to the horizontal of 30.0°, Over what distances will the kick be successful (that it, over what range of distances will the ball clear the crossbar?) Assume the kick is in a domed stadium with no wind, and the ball is a point object. a.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
- Ferris wheel with a diameter D = 11 m, make one revolution every 18 s. When he is at the top, essentially a diameter above the ground, he released a ball. How far (in m) from the point on the ground directly under the release point does the ball land? (Ax = ? m) 3.48 .a 2.47.b 3.89.c 1.82 .d 2.9.e8. The hole on a level, elevated golf green is a horizontal distance of 145 m from the tee and at an elevation of 12.3 m above the tee. A golfer hits a ball at an angle of 8.7° above the horizontal and makes a hole-in-one! What was the initial speed of the ball? m/s 60 ssf60 * ssf60 ssfondle ssf60 sste ƒ60 ssf60*** 09Jss12. A rescue airplane is rising at an angle of 30° above the horizontal with a speed of 300 m/s. It releases a survival package when it is at an altitude of 200 m. If air resistance is ignored, the time it takes for the package to fall to the ground is A. 24.6 s B. 28.3 s C. 23.1s D. 33.8 s E. 31.9 s