A projectile is launched at 10.0 m/s in a direction 45.0 degrees above the horizon. It hits the ground 10.0 m below its initial position. What is its speed just before hitting the ground? Ignore air resistance. *
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- 6. A ball is thrown horizontally from the top of a building 110 m high. The ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground? a. 14 m/s b. 23 m/s c. 36 m/s d. 49 m/s e. 61 m/sWhat is the velocity of a ball thrown with an initial speed of 28 m/s, 45° above the ground at t = 2.0 s? A. v = [28î+ (19.6)f]m/s B.v = [19.8î + (20)f]m/s C.3 = [(19.8t)î – (4.9t²)ſ]m/sThe height (in meters) of a projectile shot vertically upward from a point 2m above ground level with an initial velocity of 24.5 m/s is h = 2 + 24.5t - 4.9t2 after t seconds. a. When does the projectile reach its maximum height? b. What is the maximum height?
- A 0.7 kg rubber ball has a horizontal velocity of 1.107 m/s at point A and goes through a projectile motion until it hits a smooth floor at point B. It then bounces off and reaches another peak in its trajectory at point C.Which of the following best approximates the speed of the ball right before it hits the floor at point B?a. 4.43 m/sb. 1.107 m/sc. 4.29 m/sd. 4.57 m/sAt t = 0, a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0 i - 4.0 j) m/s 2. At the instant the x coordinate of the particle is 15 m, what is the speed of the particle? O a. 14 m/s O b. 12 m/s O c. 16 m/s O d. 10 m/s O e. 26 m/sA ball is thrown horizontally from the top of a building 0.10 km high. The ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground? a. 43 m/s b. 47 m/s c. 39 m/s d. 36 m/s e. 14 m/s
- While standing on the roof of a building, a child tosses a tennis ball with an initial speed of 16 m/s at an angle of 25° below the horizontal. The ball lands on the ground 3.5 s later. How tall, in meters, is the building? m DETAILS OSCOLPHYS2016 3.4.WA.047. MY NOTES ASK YOUR TEACHER A soccer ball, kicked from ground level at an angle of 73.0° above horizontal, is in the air for 4.40 s. What was its initial speed, in m/s, just after it was kicked? Ignore air resistance. m/sA ball is thrown toward a cliff of height h with a speed of 25m/s arid, an angle of 60? above horizontal. It lands on the edge of the cliff 3.5s later. Part A How high is the cliff? Part B What was the maximum height of the ball? Part C What is the ball's impact speed?7. At t = 0, a particle leaves the origin with avelocity of u 9.0m/s j the xy plane with an acceleration of a 2.0i- 4.0j m/s2. At the instant the x coordinate of the particle is 15 m, what is the speed of the particle? A. 10 m/s B. 16 m/s C. 12 m/s D. 14 m/s E. 26 m/s maximum height above ch se, 2019. Departme
- Name: ID: A 3. A ball is thrown horizontally from the top of a building 0.10 km high. The ball strikes the ground at a 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground? point a. 43 m/s 47 m/s b. 39m/s d. 36 m/s C. 14 m/s 4. A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 sOn planet #3, you fire a projectile horizontally from the edge of a vertical cliff 69.9 m above the ground, with an initial speed of 59.8 m/s. The projectile lands 67.2 m away from the base of the cliff. What is the value of g for planet #3? a. 183.63 m/s^2 b. 110.71 m/s^2 c. 55.35 m/s^2 d. 49.18 m/s^2 2. On planet #4, you fire a projectile from the ground at an initial speed of 20.0 m/s at an angle of 43.1 degrees above the horizontal. The projectile lands 78.7 m away from the launch point. What is the value of g for planet #4? a. 3.5 m/s^2 b. 309.0 m/s^2 c. 211.6 m/s^2 d. 5.1 m/s^2A student throws a 2.5kg ball horizontally off the top of a building with an initial speed of 4.25 m/s. At the same time, another student throws a 1.12kg ball along the same trajectory with the same initial speed. Which of the balls hits the ground first? a. The 2.5kg ball. b. They hit at the same time. c. The 1.12kgball.