3. An elevator is moving downward at 1m/s. It is speeding up, with an acceleration of 3m/s². A block with a weight of 40N sits inside the elevator. a) What direction does the acceleration point? b) What is the mass of the block? c) Draw a force diagram of the block, and fill out the force table for the block below. (There are no horizontal forces so we don't need the x column.) d) Solve for any Force unknown forces on the block. 7 y +y ← 1m/s

Q: 2. A 20 kg box sitting on a horizontal surface is pulled by a horizontal force of 110 N. The…

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A: Free body diagram:

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!