Help Janna :o
got the nuts
Joined: May 2006
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From: emerald city
(07:56:32 PM) Janna: and you, because you're moving.. keep going forward and the object is hurtled backward at a higher rate because of that
Are you sure that happens?
So youre saying if you are going east 50mph, and a pebble gets thrown at your windshield going west at 20mph from a car kicking it up...the pebble will bounce off your windshield and head east at a rate more than 50 mph or 20 mph?
Are you sure that happens?
So youre saying if you are going east 50mph, and a pebble gets thrown at your windshield going west at 20mph from a car kicking it up...the pebble will bounce off your windshield and head east at a rate more than 50 mph or 20 mph?
if pebble is at 20 and cars goisng at 50 then peebebl hits the windshidl
LEVEL UP
Joined: Sep 2004
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From: Indianapolis
It sounds like an example of an elastic collision:
In the example above, the target (i.e. your car) is not in motion whereas in your case it would be but I think the concept would still apply since the car's velocity should be unchanged by the collision...maybe.
Elastic Collision, Massive Target
In a head-on elastic collision between a small projectile and a much more massive target, the projectile will bounce back with essentially the same speed and the massive target will be given a very small velocity. One example is a ball bouncing back from the Earth when we throw it down.
In the case of a non-headon elastic collision, the angle of the projectiles path after the collision will be more than 90 degrees away from the targets motion.
In a head-on elastic collision between a small projectile and a much more massive target, the projectile will bounce back with essentially the same speed and the massive target will be given a very small velocity. One example is a ball bouncing back from the Earth when we throw it down.
In the case of a non-headon elastic collision, the angle of the projectiles path after the collision will be more than 90 degrees away from the targets motion.
Last edited by R_Squared; Dec 13, 2009 at 11:57 PM.
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From: cardboard box
Its called Relative velocity/Relative acceleration, if im understanding you correctly.
