# Need help with equations of motion

• Feb 1st 2013, 02:42 AM
dom139
Need help with equations of motion
Assume that g = 10 ms-2
A particle of mass 3 kg is initially (t = 0) at height z(0) = 20 metres and has zero initial velocity.
Assuming zero drag
the height of the particle after 5 seconds = z(5) = ______?_____ metres

I'm sure it's fairly simple but the answers i keep getting are ridiculous :(
• Feb 1st 2013, 04:08 AM
BobP
Re: Need help with equations of motion
Is that after its bounced several times ?
• Feb 1st 2013, 04:54 AM
dom139
Re: Need help with equations of motion
No, but don't worry i figured it out :)
• Feb 6th 2013, 07:52 AM
moneesharobin
Re: Need help with equations of motion
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