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- 3. 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?A ball is thrown with an initial velocity vo = 12 m/s making an angle 00 horizontal. It hits the wall of a building after 0.7 s. What is the direction of the velocity of the ball just before hitting the wall? Neglect air resistance and use g = 10 m/s?. = 58° above the 8, = 58 O 39.1 deg. O 18.9 deg. O 10.5 deg. O 26.5 deg. 33.3 deg.1) At the Blue Jays game, R. A. Dickie (height = 1.2m) throws a baseball straight in the air %3D (140g) with 95N of force for 30cm. a. What is the speed of the ball 2.4 m above the ground? b. What is the maximum height of the ball (assuming no air resistance)?
- (b) y-coordinate Need Help? Read It Watch It Submit Answer 2. DETAILS SERCP11 3.2.P.009. MY NOTES ASK YOUR TEACHER The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7 m when leaving the ground at an angle of 45°. With what speed must the animal leave the ground to reach that height? m/s Need Help? Read It Watch It PRACTICE AOTHER MY NOTES ASK YOUR TEACHER 3. DETAILS SERCP11 3.2.P.014. From the window of a building, a ball is tossed from a height yo above the ground with an initial velocity of 8.90 m/s and angle of 22.0° below the horizontal. It strikes the gyound 6.00 s (a) If the base of the building is taken to be the origin of the coordinates, with upward-the positive y-direction, what are the initial coordinates of the ball? (Use the following as necessary: Yo: Assume SI units. Do not substitute numerical values; use variables only.) later. 10:039. A sniper is finding his range by firing at some watermelons. He is stationed on a 3.4 m high structure and his rifle will fire horizontally at 142 m/s. What is the farthest a watermelon can be placed and still be hit by the round? 10. With what total velocity will the bullet hit the watermelon?a. zerob. v_o (cos30)c. v_o (sin30)d. v_o
- 8. Consider a projectile motion in two dimensions. Let the muzzle velocity of the projectile be vo = 300 m/s and the angle of elevation be (8=290). Consider k=0.021 and the maximum height is A. 896.34 m B. 456.31 m C. 917.43 m D. 665.43 mWhat is the theta pleaseA roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is required to just miss the roof corner B? Also determine the distance d. Answers: Vo = i d= i a -2.9 m- B 1.2 m + 0.7 m E 4.1 m m/s
- Max throws an apple off the side of a building with a velocity of 30.3 m/s on the horizontal. A few moments later, the apple has a velocity of 37.8 m/s at 36.6 degrees below the horizontal. What is the change in velocity?9. You are a basketball player shooting a three-point shot. You are standing 10.0 m from the basket, which is 3.0m above the floor. You jump up and shoot the ball, releasing the ball when your hands are at the same height as the basket (3.0 m). You release the ball with an initial velocity va, at an angle 0 = 42° from the horizontal. The ball goes in! Your team wins! VA V=0, 3 m + distace 10 m a. What was the initial velocity of the ball? (Show your work, put a box around your answer.) Ax = 10m Ay=3M A=-9.0'0² V6+2(98) ( Vo 14m/3)X b. What maximum height above the FLOOR was reached by the ball? (Show your work, put a box around your answer.). V= Vo°+ 2A (A4) +219.8)(Y-0) O 14f -19.664-0 196 =19.6y = )8m 14 = Vot Vot use Vy acce krahom c. If you wanted to decrease the required initial velocity on the ball, would you increase or decrease the initial angle from the horizontal? Check one: increase the angle decrease the angle Version B 3. Page 6 of 8A. A model rocket flies horizontally off the edge of a cliff at a velocity of 50.0 m/s. If the canyon is 100.0 m deep, what is the rockets final velocity? Possible answers: 337m/s 451m/s 225m/s 67m/s B.If a passenger on a moving bus tosses a coin into the air, it will land Possible answers: -In the passengers hand -Behind the passenger -in front of the passenger -directly in front of the passengers hand