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A golf ball is dropped from rest from a height of 9.90 m. It hits the pavement, then bounces back up, rising just 5.30 m before falling back down again. A boy then catches the ball when it is 1.16 m above the pavement. Ignoring air resistance, compute the total amount of time that the ball is in the air, from drop to catch.
A certain freely falling object requires 1.45 s to travel thelast 38.0 m before it hits the ground. From what height above theground did it fall
q1. an electric force of 4.0 n exists between two objects separated from each other by a distance of r. if the distance
A child and sled with the combined mass of 60.4 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 13.4 m/s at the bottom, what is the height of the hill.
A basketball player is balancing a spinning basketball on the tip of his finger. The angular displacement of the ball, in radians is
A 7.1 kg body is at rest on a frictionless horizontal air track when a constant horizontal force actingin the positive direction of an xaxisalong the track is applied to the body. A stroboscopic graph of theposition of the body as it slides to the..
Several people are riding in a hot-air balloon. The combined mass of the people and balloon is 348 kg. how much mass should be dropped overboard
A trained dolphin leaps from the water with an initial speed of 10.2 . The trainer releases the ball at the horizontal distance of 5.47 away, At what height does the dolphin catch the ball
A very thin bubble is floating in air. If the bubble strongly reflects green light (? = 520 nm), what is the minimum possible thickness of the bubble
q1. dennis driving his 600 kg car makes a 90 degree turn. his speed before the turn is 15.0 ms and after the turn are
The fundamental frequency of an open-open tube is 1800Hz when the tube is filled with "zero celicus" helium. What is its frequency when filled with "zero celicus" air? The speed of sound in helium is 970m/s and in air is 331m/s . Express your answer ..
An electric fan is running on HIGH. After fan has been running for 1.0 minutes, the LOW button is pushed. What was the initial angular speed of the fan in rev/sec
A 94-kg fullback is running at 3.7m/s to the east and is stopped in 0.85 s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback
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