An object that is acceleration can be described as a(n) force. gravity
unbalanced
balanced
physical

Which is the best example of an unbalanced force?

A book resting on a shelf.
A train accelerating away from a station.
A chair sitting motionless.
A car driving at a constant speed.

Which direction will the barrel travel when the farmer applies a downward unbalanced force on the pulley?
up
down
left
no movement

Explain what happens at the saturation point when adding salt to water at room temperature.

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?