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September 20, 2014

September 20, 2014

Posted by **mohd** on Sunday, April 4, 2010 at 3:12pm.

Let us now consider the situation quantitatively. Let the mass of the sled be m and the magnitude of the net force acting on the sled be Fnet. The sled starts from rest.

Consider an interval of time during which the sled covers a distance s and the speed of the sled increases from v_1 to v_2. We will use this information to find the relationship between the work done by the net force (otherwise known as the net work) and the change in the kinetic energy of the sled.

1.Find the net force F_net acting on the sled.?

(Express your answer in terms of some or all of the variables m, s, v_1, and v_2)

2.Find the net work W_net done on the sled.?

(Express your answer in terms of some or all of the variables Fnet and s.)

- Physics -
**drwls**, Sunday, April 4, 2010 at 4:50pmHow thoughtful of you to copy the complete lecture leading up to the question. Now please let us see own effort in solving the problem.

Work done is F x s.

The change in kinetic energy is ____?

- Physics -
**DeShawn White**, Monday, October 7, 2013 at 9:24pm(m((v^2)^2-(v^1)^2)/2s)

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