A 25 kg child plays on a swing with support ropes that are 2.2 m long. A friend pulls her back
until the ropes are 42.2 from the vertical and releases her from rest. What is the potential
energy for the child just as she is released compared with the potential energy at the bottom of
the swing?
A. 177 J
B. 140 J
O
C. 539 J
D. 160 J
NEED ANSWER NOW
Answers: 2
Physics, 21.06.2019 20:30
Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?
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Physics, 22.06.2019 07:30
Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?
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Physics, 22.06.2019 10:00
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?
Answers: 1
A 25 kg child plays on a swing with support ropes that are 2.2 m long. A friend pulls her back
unti...
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