A small hockey puck slides without friction over the icy hill shown in Fig. 7.6 and lands 6.20 m from the foot of the cliff with no air resistance. Its speed Vo at the bottom of the hill is
closest to:
(Cliff height is 8.5 m)
(Length of base of cliff is 15.3)

answer :

b

explanation:

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.