8) Would gravity do more work on a brick sliding down a frictionless ramp if the...

8) Would gravity do more work on a brick sliding down a frictionless ramp if the brick started from rest, or if it started with an initial velocity down the slope?

a) Gravity does more work if it started from rest.

b) Gravity does more work if it started with an initial velocity down the slope.

c) Gravity does the same amount of work in both cases.

9) In a particular instant, a rock slides horizontally along a slope. The force of friction acting on the slope is in what direction?

a) Up the slope

b) Down the slope

c) In the direction of travel of the rock

d) Opposite the direction of travel of the rock

10) I stand with my arms straight out and spin. Which body part has more centripetal acceleration?

a) My elegant hands

b) My gorgeous elbows

c) It’s a tie.

11) I stand on slope with one foot in the air. What could I do to increase the friction I receive from the slope?

a) Put my other foot down.

b) Pick up a physics book that was on the slope by me.

c) either

d) neither

Solutions

Expert Solution

genius_generous answered 1 year ago

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