A ball is thrown straight up with enough speed so that it is in the air for several seconds. (a) What is the velocity of the ball when it reaches its highest point?
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- A baseball player throws a ball into the air with an initial speed of 27 m/s [up]. Ignore air resistance. (a) How high does the ball go? (b) How long is the ball in the air before she catches it?A bullet is shot straight up with an initial speed of 180 m/s. How long is the bullet in the air and how high does the bullet go? (neglect air resistance)The smal archerfish Dength 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly named creature captures its prey by shooting a stream of water drops at an insect. either flying or at rest. The bug falls into the water and the fish gobbles it up. The archerfish has high accuracy at distances of 1.2 m to 1.5 m, and it sometimes makes hits at distances up to 3.5 m. A groove in the roof of its mouth, along with a curled tongue, forms a tube that enables the fish to impart high velocity to the water in its mouth when it suddenly closes its gill flaps. Suppose the archerfish shoots at a target that is 2.40 m away, measured along a line at an angle of 30.0° above the horizontal. With what velocity must the water stream be launched if it is not to drop more than 5.00 cm verticaly on its path to the target? 22.65 Your response is within 10% of the correct value. This may
- in a circus act, an acrobat rebounds upward from the surface of a trampoline at the exact moment that another acrobat, perched 9.0 m above him, releases a ball from rest. While still in flight, the acrobat catches the ball just as it reaches him. If he left the trampoline with a speed of 7.6 m/s, how long is he in the air before he catches the ball? (FYI I don't necessarily need the answer but I would really like to know how to solve it, as I don't know how)A young child uses a slingshot to launch a rock straight up at a speed of 12 m/s and then catches it at the point from where he launched it. What is the maximum height that the rock reaches?A) A student throws a dart horizontally toward the center of a target, X, at a speed of 20 m/s as shown. The dart flies for 0.1 s and then hits below the center, at Y. How much lower, in m, does it hit? B) A drone at too great a height drops a box. The box drops straight down the ground and hits at 100 m/s smashing the contents. Neglecting air friction, approximately, how high, in m was the drone? C) is in the picture
- A crazy, young boy on a sled is able to get up to an incredible speed of 22.5 m/s (yes, he is wearing a helmet!)along a frictionless horizontal surface while he approaches an icy hill with a vertical height of 11 m, as shown.He makes it to the top, and then fies of horizontally from the ledge of the hill. How far from the base of thehill does the boy land?15) You are standing on a cliff 50 m high and throw a rock with an initial velocity of 20 m/s straight up so that the rock eventually lands at the base of the cliff (50 m below you). How long is the rock in the air? a) What is the maximum height of the rock? b) What is the final velocity of the rock? c)Attempting to run out the clock in a basketball game, a player throws the ball straight up from height yo. An opposing player catches the ball coming down, at the same height. How much time was used up while the ball was in the air? [Data : yo = 1.20 m; maximum height of the ball = 7.32 m ] Submit Answer Tries 0/12
- To celebrate her good performance on a physics test, Alice decides to break out a bottle of champagne. In order to avoid property damage, she takes the bottle outside to uncork it. The cork pops off the champagne bottle with a velocity of 12.0 m/s at an angle of 15° relative to the vertical. When the cork is released, Alice is holding the bottle such that the cork is 1.80 m above the ground. How far does Alice have to walk to retrieve the cork?A ball is thrown vertically upward with an initial velocity of 29.4 metres per second. What is the maximum height reached by the ball (neglect friction).The highest barrier that a projectile can clear is 18.4 m, when the projectile is launched at an angle of 15.0° above the horizontal. What is the projectile's launch speed?