A boulder at the top of a vertical cliff has a potential energy of 100 MJ relative to the ground below. It rolls off the cliff. When it is halfway to the ground its kinetic energy

Suppose you put in 100 J of work on a lever and get out 93 J of work. How much of the work input is lost as heat?

Torque _____.

Which statement is TRUE of an object that spins when it’s thrown through the air?

Which statement is true about toppling?

A meter stick is suspended at its midpoint and two blocks are attached. A 10-N block is attached 20 cm to the left of the midpoint. Where must a 40-N block be placed to balance?

Which description would produce the greatest torque?

In physics, work is defined as______________.

If you apply 25 N of force on a box over 10 meters, how much work did you do on the box?

How much farther will a car traveling at 100 km/s skid than the same car traveling at 50 km/s?

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