# Simple physics problem: What is the mass of an object? [closed]

An object is thrown straight upward with an initial velocity of 1217 pixels per second. The vertical velocity of the object after 2 seconds is 0 due to gravity and the object is 1188 pixels above its starting point. The acceleration on the object due to gravity is 100 pixels per second squared. What is the mass of the object?

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## closed as off-topic by Jim, Start wearing purple, user1337, Ayman Hourieh, Serkan Aug 21 '13 at 0:30

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"pixels per second squared" is not a unit of force. – Daniel Littlewood Aug 20 '13 at 23:05
@DanielLittlewood: Would it make sense to replace the word "pixels" with "meters"? – Joncom Aug 20 '13 at 23:07
No; in either case it would be a unit of acceleration. Do you perhaps mean the gravitational acceleration (usually called $g$)? – Daniel Littlewood Aug 20 '13 at 23:08
My bad, yes, I mean acceleration. – Joncom Aug 20 '13 at 23:28