|Jun4-08, 07:12 PM||#1|
Kinetic Energy Question
1. The problem statement, all variables and given/known data
A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.40 g Ping-Pong ball move so that the two balls have the same kinetic energy?
2. Relevant equations
I know that:
3. The attempt at a solution
I set my equation like so:
and I reduced it to this:
I plugged in the values and solved for v2:
I put this answer in and it tells me...
wrong check mark
Your answer differs from the correct answer by orders of magnitude. m/s
What am I doing wrong? Please point me in the right direction.
|Jun4-08, 07:16 PM||#2|
Blog Entries: 1
(Don't leave off squaring the speeds.)
|Jun4-08, 07:25 PM||#3|
Thank you Doc Al.
The correct answer was 127m/s
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