Homework Help: physics

Posted by Kate on Saturday, August 6, 2011 at 7:31pm.

which of the following is there no net work?

A car accelerates down a hill.
A car travels at constant speed on a flat road.
A car decelerates on a flat road.
A car decelerates as it travels up a hill.

I say its the first one

physics - bobpursley, Saturday, August 6, 2011 at 8:46pm
and, you are wrong. Gravity is doing work on the car.
physics - mubark, Sunday, October 14, 2012 at 8:29pm
the second one
physics - mubark, Sunday, October 14, 2012 at 8:29pm
the second one

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