energy enables an object todo work.
work is done when,

a. a force is put on an object, and the object moves in the direction of the force.

b. a force is put on an object, and the object does not move in any direction.

c. no forces is put on an object, and the object does not move in any direction.

d. no force is put on an object, but the object moves at varying speeds in a random direction.

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap