Physics, 30.11.2020 20:10 bluebabyyy
A ball with a mass of M=5.00kg is attached to 30.0cm long cord and it
is initially at rest with the string horizontal as shown below. When the
ball is released, it hits a block with mass m=2.50kg that is at the edge of
a table. After the collision, the ball bounces back with a speed of
1.50m/s, and the block lands 4.00m from the edge of the table.
a) Find the speed of the ball right before its collision with the block.
(5 points)
b) With what velocity does the block leave the table? (5 points)
c) Find the height of the table. (5 points)
d) With what speed does the ball land on the floor? (5 points)
Answers: 3
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Physics, 21.06.2019 22:20
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
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Physics, 22.06.2019 07:00
Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j
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Physics, 22.06.2019 17:30
Current from a charged capacitor lights a bulb. as time goes on the brightness of the
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A ball with a mass of M=5.00kg is attached to 30.0cm long cord and it
is initially at rest with the...
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