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A football game begins with a kickoff in which the ball travels a horizontal distance of 45 yd and lands on the ground. Suppose the ball is punted from an initial height of 0.790 . If the ball was kicked at an angle of 41.0° above the horizontal, what is the initial speed of the ball in this case?
An eagle perched on a tree limb 19.5 m above the water spots a fish swimming near the surface. How long does it take for the eagle to reach the water
A 50g ball of clay traveling at speed v0 hits and sticks to a 1.0kg block sitting at rest on a frictionless surface. what os the speed of the brick after the collision
How many revolutions will the car have gone through.
a wheel is spinning freely on its axis with an angular velocity w of 2 rad/s. What is its renitic energy if the angular velocity is increased to 10 rad/s
A pendulum clock with a brass suspension system m is calibrated so that its period is 1s. at 11*C (degree Celsius). If the temperature increases to 44oC, by how much does period change.
A cockroach of mass m lies on the rim of a uniform disk of mass 8m that can rotate freely about its center like a merry-go-round. at first the cockroach and disk rotate together with an angular velocity of 0.200 rad/s. Then the cockroach walks half..
An archer shoots an arrow horizontally at a target 12 m away. The arrow is aimed directly at the center of the target, but it hits 56 cm lower. What was the initial speed of the arrow.
A billiard ball moving at 5 m/s strikes a stationary ball of the same mass. After the collision, find the struck ball's velocity (magnitude and direction) after the collision
A liquid compresses 2.0 percent when subjected to a pressure of 34 MPa. What is the bulk modulus of the liquid
A 75-kg window air conditioner falls a distance of 6 m to the street below (no one is injured). What was the PE of the air conditioner
What is the distance between deer a and c
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
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