Posted by **kevin** on Sunday, April 1, 2012 at 8:54pm.

mass of coaster is 800kg

second hill is 70m

do you take 800*70*9.8=548800

Please help

- physics -
**bobpursley**, Sunday, April 1, 2012 at 8:56pm
Yes. use units, here it will be energy in Joules

- physics -
**kevin**, Sunday, April 1, 2012 at 10:21pm
Could you show me how my answer would look please, and would you happen to know aside from the mass what other measurement (numerical value) need to know to calculate GPE?

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