final Kenergy=initial PE + initial KE
solve for Kenergy, then solve for velocity.
On the second, just subtract 100J from final KE, then solve for velocity
One kg of water is moving 2 m/s as it goes over a dam. At the base of the dam, 13m below, how fast is that water going if air friction can be neglected? (ans: 16.25m/s)
B: if the water does not go straight over the dam, but instead goes through the hydroelectric generator in the base of the dam, creating 100 J of electrical potential energy in the process, how fast will it be going after it exits the power plant at the bottom? (ans 8 m/s)
I got to figure out how they got the answers...
1 answer
1 answer