Physics, 13.11.2019 02:31, melikefood01
Aconstant horizontal pull acts on a sled on a horizontal frictionless ice pond. the sled starts from rest. when the pull acts over a distance x, the sled acquires a speed v and a kinetic energy k. if the same pull instead acts over twice this distance, a) the sled’s speed will be 2v and its kinetic energy will be 2k.
b) the sled’s speed will be 2v and its kinetic energy will be k 2 .
c) the sled’s speed will be v 2 and its kinetic energy will be 2k.
d) the sled's speed will be v 2 and its kinetic energy will be k 2 .
e) the sled's speed will be 4v and its kinetic energy will be 2k.
Answers: 2
Physics, 22.06.2019 09:40, zackarygonzalez1028
Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly
Answers: 3
Aconstant horizontal pull acts on a sled on a horizontal frictionless ice pond. the sled starts from...
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