A ball is thrown directly down with initial speed of 5 m/s from a height of 60m. How long does it takes to hit the ground (in s)? A) 4 B) 3 C) 2 D) 5
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- A bangus (milkfish) can attain a maximum swimming speed of 6.0 m/s. a). How high can bangus jump vertically out of the water at that speed? a) 1.84 m height above the waterb) 1.84 m height above the groundc) 2.84m the groundd) 2.85 m above the waterA girl is standing at the edge of a cliff 100. m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed 8.00 m/s. a) How long does it take the rock to hit the ground? b) What is the speed of the rock the instant before it hits the ground? Please type answerA girl flips a coin into a 50 m deep wishing well. If she flips the coin upwards with an initial velocity of 5 m/s:a) How high does the coin rise?b) How long does it take to get to this point?c) How long does it take for the coin to reach the bottom of the well?d) What is the velocity when the coin hits the bottom of the well?
- You throw a ball vertically upward from a 50 - m building roof. The ball left your hand at a velocity of 20.0 m/s. On its way down, it just misses the roof. Ignoring air resistance so that the ball is in free fall, The maximum height reached by the ball is The time needed to reach the maximum height is The time needed for the ball to reach the ground is The final velocity of the ball is Answer is 2 decimal places.A ball is thrown upward with initial velocity of 20 m/s.a) How long is the ball in the air?b) What is the greatest height reached by the ball?c) When is the ball 15 m above the ground?(Hint: Assume the ball starts on the ground at x = 0)1.) a ball is thrown upward at a speed of 8 m/s by a girl standing on the edge of a cliff, so that the ball can fall to the base of the cliff 35m below. a) how long does it take the ball to reach the base of the cliff? b) what is the total distance traveled by the ball?
- A ball is thrown vertically upward at t = 0, with an initial speed of vo above the ground. The ball reaches its maximum height at point A. Neglect air resistance. What is the vertical displacement, AyoA = ? (Take g %3D 10 m/s from a point O. The point O is 3 m = 10 m/s²) a) 20 m b) 15 m c) 10 m d) 5 m e) 1 m Vo- 10 m/s 0,0 3 m a C d.An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.4m/s from a height of 1.55m above the ground. a) will the rock reach the top? b) if so what is its speed at the top? if not, what initial speed must it have to reach the top? c) find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of 7.4 m/s and moving between the same two points. d) does the change in speed of the downward moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? e) why does this agree or not agree.An object slides off a frictionless, horizontal table from a height of 1.40 m above the floor. Itstrikes the floor a distance of 1.88 m from the base of the table.a) Calculate the speed with which the object leaves the table.b) Calculate the velocity (magnitude and direction) of the object just before it strikes the floor.
- A girl is standing at the edge of a cliff 100. m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed 8.00 m/s. a) How long does it take the rock to hit the ground? b) What is the speed of the rock the instant before it hits the ground?A daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving up a 32o ramp at a speed of 40.0 m/s . How many buses can he clear if the top of the takeoff ramp is at the same height as the bus tops and the buses are each 35.0 m long? ~ 10 ~ 7 ~ 4 ~ 12A ball is thrown vertically upward from the top of a building with an initial velocity of 20 m/s at an initial height of 50 m above the ground. The ball just misses the roof on its way down. a) Determine the time needed for the ball to reach the ground.b) Determine the velocity and position of the ball at t=5 sec