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A 3.2 kg statue of Einstein is on a shelf 2.00 m above the floor. You do 18 J of negative work to move the statue to the table top. How high is the table? Note: The diagram is not to scale.
Charge the plastic sheet once more and place it against a wall or against a flat
vertical surface like the blackboard or the sides of a table. What did you observe?
7.2 kg object has 95 J of potential energy after being lifted vertically from the floor. How high above the floor is the object? Include a sketch showing the starting position and final position of the object.
A student wearing frictionless roller skates moving at 1.2 m/s on a horizontal surface is then pushed by a friend 6.54 m with a constant force of 45 N. If her final kinetic energy is 352 J, what is the mass of the student?
You serve a volleyball that has a mass of 2.1 kg. With what speed does the ball leave your hand if it has 945 J of kinetic energy?
How much work is done by you on 15 N sack of potatoes while holding it for 3.0 minutes
A student pushes a desk 1.3 m across the floor at constant velocity. What is the mass of the desk if the coefficient of friction is 0.19 and the student did 49.4 J of work on the desk?
A physics student does 0.0273 J of work on a cart to push it 5.80 cm along on air track. If the acceleration of the cart was 0.314 m/s2, what was the mass of the car?
a) The force of gravity does 405.7 J of work on an 18 kg object as it is lifted vertically with a constant velocity. How high was the object lifted?
b) What type of work is done by the force of gravity as the object was lifted? Explain.
Sheila did 110 J of work to move a chair 2.40 m to the right. What was the magnitude of the force that Sheila used to move the chair?
