Question
In: Physics
A boy stands on a diving board and tosses a stone into a swimming pool. The...
A boy stands on a diving board and tosses a stone into a swimming pool. The stone is thrown from a height of 2.50 m above the water surface with a velocity of 4.00 m/s at an angle of 60.0° above the horizontal. As the stone strikes the water surface, it immediately slows down to exactly half the speed it had when it struck the water and maintains that speed while in the water. After the stone enters the water, it moves in a straight line in the direction of the velocity it had when it struck the water. If the pool is 3.00 m deep, how much time elapses between when the stone is thrown and when it strikes the bottom of the pool?
Solutions
genius_generous answered 2 years agoRelated Solutions
A boy stands on a diving board and tosses a stone into a swimming pool. The...
A boy stands on a diving board and tosses a stone into a
swimming pool. The stone is thrown from a height of 2.50 m above
the water surface with a velocity of 4.00 m/s at an angle of
60.0
4. A boy stands on a diving board and tosses a stone into a swimming pool....
4. A boy stands on a diving board and tosses a stone into a
swimming pool. The stone is thrown from a height of 2.8 m above the
water surface with a velocity of 5.6 m/s at 72 degrees above the
horizontal.
a) First determine the time it is airborne. (I got 1.48 sec)
b) Now find its impact velocity. (Vx=2 m/s and Vy=9.17 m/s)
As the stone impacts the water, it instantly slows down to half
its previous velocity,...
1) You can jump 3 m (10 feet) off of a diving board and into a swimming pool and be uninjured.
1) You can jump 3 m (10 feet) off of a diving board and into a swimming pool and be uninjured. However, if you jumped from the same height onto concrete it would be very bad. Use the principles of impulse and momentum to explain this.
2) A 125 kg linebacker running to the right at 2.5 m/s and an 80 kg quarterback running to the left at 3 m/s collide in midair. The linebacker holds on to the...
A music fan at a swimming pool is listening to a radio on a diving platform....
A music fan at a swimming pool is listening to a radio on a
diving platform. The radio is playing at a constant frequency tone
when this person, clutching the portable radio, jumps. Describe the
observed frequency or pitch for the following three observers.
Explain your reasoning.
a) The person holding the radio
b) A person left behind on the platform
c) A person below the platform floating on a rubber raft
1) A diver of mass 43.0kg stands on the end of a uniform diving board over...
1) A diver of mass 43.0kg stands on the end of a uniform diving
board over the water. The board is 7.00m long and has a mass of
75kg. The end of the board opposite the diver is attached to the
platform. The bounce of the board is adjusted by a roller
underneath that can be moved back and forth. The roller is 2.80 m
from the fixed end of the board. a) What are the magnitude and the
direction...
A 55-kg diver stands at the end of a diving board located 10 m above the...
A 55-kg diver
stands at the end of a diving board located 10 m above the water
level. The diving board is held down at one end by an
anchor bolt. The fulcrum is located at 1.4 m from the
bolt and the total length of the board is 3.9 m.
Draw a free body diagram showing the forces acting on the
diver.
Calculate the torque that she exerts on the board with respect
to the fulcrum. Neglect the mass of the...
Pool Corporation, Inc., is the world’s largest wholesale distributor of swimming pool supplies and equipment. Pool...
Pool Corporation, Inc., is the world’s largest wholesale
distributor of swimming pool supplies and equipment. Pool Corp.
reported the following information related to bad debt estimates
and write-offs for a recent year.
Allowance for doubtful accounts:
Balance at beginning of year $ 9,002
Bad debt expense 4,098
Write-offs (5,110 )
Balance at end of year $ 7,990
Required:
1. Prepare journal entries for the bad
debt expense adjustment and total write-offs of
bad debts for the current year.
2. Pool...
A boy tosses a football upward. If the football rises a vertical distance of 6.9m and...
A boy tosses a football upward. If the football rises
a vertical distance of 6.9m and the boy catches it at the same
point he released it, what is the velocity of the ball just before
he catches it? (Assume upward is the positive direction. )
A student stands on the edge of a cliff and throws a stone horizantally over the...
A student stands on the edge of a cliff and throws a stone
horizantally over the edge with a speeed "v1". The cliff is "h"
meters high. Given [h, v1]
a. The time for the stone to hit the ground
b. The horizantal distance the stone traveled while in the
air.
c. The magnitude and direction of the stone's velocity just
before hitting the ground
A student stands at the edge of a cliff and throws a stone horizontally over the...
A student stands at the edge of a cliff and throws a stone
horizontally over the edge with a speed of vi = 10.0 m/s. The cliff
is h = 41.9 m above a body of water as shown in the figure below.
With what speed and angle of impact does the stone land?
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