You stand next to a wall on a frictionless skateboard and push the wall with a force of 45N. If your mass is 90 Kg. What is your acceleration? Using a rope you are lifting upward at constant speed a bucket of water from a well. All frictional forces are neglected. In this situation, forces on the bucket of water are such that 1. the upward force by the rope is greater than the downward force of gravity. 2. the upward force by the rope is equal to the downward force of gravity. 3. the upward force by the rope is smaller than the downward force of gravity. 4.none of the above. (The water bucket goes up because the rope is being shortened little by little, not because the action of an upward force on the bucket.)

You stand next to a wall on a frictionless skateboard and push the wall with a force of 45N. If your mass is 90 Kg. What is your acceleration? Using a rope you are lifting upward at constant speed a bucket of water from a well. All frictional forces are neglected. In this situation, forces on the bucket of water are such that 1. the upward force by the rope is greater than the downward force of gravity. 2. the upward force by the rope is equal to the downward force of gravity. 3. the upward force by the rope is smaller than the downward force of gravity. 4.none of the above. (The water bucket goes up because the rope is being shortened little by little, not because the action of an upward force on the bucket.)

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