A ball is thrown with an upward velocity of 5m/s from the top of a 10-m high building. One second later, another ball is thrown vertically from the ground with the velocity of 10m/s;
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- A ball is kicked at ground level with an intitial velocity of 19.5 m/s in the horizontal direction and 14 m/s in the vertical direction. What is the maximum height attained by the ball in meters?A 15 kg ball is thrown straight upward with a speed of 22 m/s. What is the maximum height the ball reaches?A rock is thrown from a bridge 18 m above water with an initial speed of 15.5 m/s. Assuming negligible air resistance, what is the speed that the rock hits the water with, in meters per second?
- A person throws a ball upward into the air with an initial velocity of 15.0 m/s. (a) Calculate how long does it takes to reach its maximum height? (b) Calculate how high it goes? (c) Calculate how long the ball is in the air before it comes back to the hand. Ignore air resistance. (d) Calculate the velocity of the ball when it returns to the thrower’s hand (point C in figure)An object starts with an initial velocity of 14.0 m/s [W] and has an acceleration of 1.2 m/s² [W]. a) What is the displacement of the object after 3.0 s? b) What is the final velocity of the object after 3.0 s?A projectile is thrown from the top of a building with an initial velocity of 300m/s in the horizontal direction. If the top of the building is 30m above the ground, how fast will the projectile be moving just before it strikes the ground?
- An explosion causes debris from the ground to rise vertically with an initial velocity of 160 feet per second. What is the speed of debris when the height is 300 feet?From approximately what floor of a building must a car be dropped from an at rest position so that it reaches a speed of 80.7ft/s (55 mi/h) when it hits the ground? Each floor is 12ft. higher than the one below it.A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 15 m, it has dropped 57 cm from its original height when it left the racquet. What was the initial speed, in m/s, of the tennis ball? (Neglect air resistance.)
- An object is thrown straight upward with an initial velocity of 20.0 m/s j. Upon reaching the ground below, its velocity is -30.8 m/s j. From what distance above ground level was the object thrown?A baseball is thrown vertically upward with an initial velocity of 9 m/s. Neglecting air friction, at what height will the baseball be after 5 seconds?A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 19 m, it has dropped 49 cm from its original height when it left the racquet. What was the initial speed, in m/s, of the tennis ball? (Neglect air resistance.)