A ball rolls off of a .68 m tall table and hits the floor with a speed of 6.0 m/s. How fast was the ball moving when it left the table

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A ball rolls off of a .68 m tall table and hits
the floor with a speed of 6.0 m/s. How fast was
the ball moving when it left the table
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If Neil Armstrong jumps while on the moon with an
initial speed of 1.51 m/s to a height of .7 m,
what is the acceleration due to gravity on the
moon?
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A person (m30 kg) climbs an 8 m tree. How much
work did they do?
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2352
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A person with a mass of 53 kg runs up a flight of
stairs (height 3 m) in 10 s. Later they run up
the same flight of stairs in 3 s. How much more
work is done the second time?
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Same mass so same force. Same height so same
work. Answer 0. More power the second time.
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A 2000 kg car is traveling at 30 m/s and locks
the brakes. The car skids for 20 m. When the
brakes are released the car has a speed of 12
m/s. What is the force due to friction?
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A car ( m 2721 kg) traveling at 10 m/s over the
top of a symmetrical hill runs out of gas at the
very top of the hill. This hill is 22 m high and
200 m long side to side. At the bottom of the
hill there is a level road. A gas station is
located 2 km from the base of the hill. If the
force of friction is constant at 500 N does the
car make it to the station. If not how far does
the car travel from the time it runs out of gas?
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A person is thrown off a horse. The instant he
leaves the horse he is located 1.6 m above the
ground and is moving straight up a 4 m/s. How
high does the rider fly into the air and with
what speed does he hit the ground?
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A very light basket hangs from the limb of a tree
by a long spring. The limb extends out over a
pond, and the spring holds the basket 3 m above
the surface of the pond. Three girls of equal
mass carefully lower themselves into the basket,
one after the other, causing the spring to
stretch 1 m for each additional girl, so that
with all three aboard, the basket just touches
the water. The girls then jump into the water,
and the basket returns to its original position.
Once back on shore, one of the girls climbs to a
higher limb of the tree and steps off, landing in
the basket and causing the spring to stretch
until the basket just touches the waters surface
again, for an instant. From what height above
the waters surface did the girl step from the
higher limb?
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A very light basket hangs from the limb of a tree
by a long spring. The limb extends out over a
pond, and the spring holds the basket 3 m above
the surface of the pond. Three girls of equal
mass carefully lower themselves into the basket,
one after the other, causing the spring to
stretch 1 m for each additional girl, so that
with all three aboard, the basket just touches
the water. The girls then jump into the water,
and the basket returns to its original position.
Once back on shore, one of the girls climbs to a
higher limb of the tree and steps off, landing in
the basket and causing the spring to stretch
until the basket just touches the waters surface
again, for an instant. From what height above
the waters surface did the girl step from the
higher limb?
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A linear elastic spring is 15 cm long. When the
upper end is held in the hand and a 500 g mass is
suspended from the lower end, its length becomes
22 cm. If the hand is now jerked quickly upward,
the spring first extends to a length of 28.5 cm,
then the mass starts to move up. The hand is
then held still. What is the acceleration with
which the mass first begins to move?
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