Sunday

April 20, 2014

April 20, 2014

Posted by **Kellie** on Monday, December 12, 2011 at 10:57pm.

Which of the following three statements used to describe work are true:

i)Work is done only if an object moves through a distance

ii)Work is done only if energy is transferred from one form to another

iii)Work is done only if a force is applied

In which of the following situations does an object have both kinetic and potential energy?

a)A plane is flying at the height of 3 km

b)A rock is perched at the top of a cliff

c)A puck slides across the ice

d)A book rests on a shelf

Make a statement about the IMA of pliers.

I'm guessing 1 is I,II and III

2 is a)

and I'm stuck on 3

Thanks!

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