Posted by **Jen** on Saturday, September 17, 2011 at 11:51am.

I have a projectile motion question. If let's say a cannon which was placed on a moving cart with negligible friction projects a cannonball straight up in the air where will it fall? Would it be behind the cannon, on the rider or fall straight down back into the cannon?

And what is the horizontal velocity of the ball relative to the rider of the cart?

- Physics -
**bobpursley**, Saturday, September 17, 2011 at 12:19pm
ignoring air friction? It lands on the cart if the cart is in uniform horizontal motion.

Horizontal velocity is the same as the cart velocity.

- Physics -
**Jen**, Saturday, September 17, 2011 at 12:42pm
Now would that also be the same visual for an observer? Or would it seem to them like the it's curving and fall on the rider?

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