A 70-kg block slides down a frictionless incline making an, Ask an Expert

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A 7.0-kg block slides down a frictionless incline making an angle of 60.0° withthe horizontal.

a) What is the total work done on the blockwhen the block slides 1.1 m (measuredalong the incline)?
b) What is the speed of the block after it has slid 1.2 m if it starts from rest?
c) What is its speed after 1.2 m if itstarts with an initial speed of 1.9m/s?

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