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You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. A friend throws you a 0.405ball that is traveling horizontally at 10.5 . Your mass is 71.5 . If you catch the ball, with what speed do you and the ball move afterwards? If the ball hits you and bounces off your chest, so that afterwards it is moving horizontally at 8.25 in the opposite direction, what is your speed after the collision?
A painter (m=70 kg) is standing a distance of 0.6 m from the top of a ladder (mass 40 kg and length 2.5 m). Find the conditions for static equilibrium of the ladder with the painter on top
A 10-kg fish is being yanked upward out of the water and the fishing line breaks. If the line is rated to a maximum 200 N tension, then what was the minimum acceleration of the fish? DRAW THE FBD!
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall ..
hat is the magnitude of the total flux through the five non-shaded faces.
Find the final velocity of the two balls if the ball with velocity v2i = ?20.9 cm/s has a mass equal to half that of the ball with initial velocity v1i = +32.1 cm/s. (Indicate the direction with the sign of your answer.)
An unknown gas is introduced into the aforementioned apparatus using the same tuning fork, and the first resonance occurs, Find the speed of sound in the gas
Calculate the buoyant force that would be exerted on a wood object that is 26g and has a volume of 31.6cm3 and a density of .82 g/mL if you held it under water. How much force must you exert
It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. Find out the angular speed of the wheel at t = 2.30 s.
If a particle of mass 4.8 kg is moving east at 10 m/s and a particle of mass 17 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair
An iron anchor of density 7870 kg/m^3 appears 200 N lighter in water than in air. What is the volume of the anchor
An object is thrown upwards with a speed of 13 m/s. How long does it take to reach a height of 4.0 m above the projection point while descending?
A window washer pulls herself upward using the bucket-pulley apparatus shown in Fig. 4-42. The mass of the person plus the bucket is 60 kg. (a) How hard must she pull downward to raise herself slowly at constant speed? If she increases this force by ..
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