physics
posted by Jon .
9)Which has more momentum? A .1 kg toy truck moving at 1012 m/s or a real 2200 kg truck moving at .046 m/s?
The real truck since it has more mass
10)A 120 kg football player tries to dive into the endzone at 7.5 m/s to score a touchdown. A 150 kg player dives out of the endzone into the other player at 5 m/s to try and stop him. They collide at the goalline and the tackler holds on to the player diving into the endzone. Does the player score a touchdown or not?
I'm gonna go with yes

Momentum is M*V. Are you aware of that? Have you done the numbers?
The toy truck's momentum is 101.2 kg m/s
The real truck's momentum is 101.2 kg m/s
They are the same.
As for the football question, explain why you chose "touchdown". 
b/c the 120 guy is going faster

yes I did the numbers how did you get:
The toy truck's momentum is 101.2 kg m/s
The real truck's momentum is 101.2 kg m/s 
Momentum is M V. I multiplied M times V.

I did the wrong numbers. I changed it to Newtons

The MOMENTUM of the runner, 120*7.5 = 900 kg m/s, exceeds the momentum of the tsacker in the opposite direction, 50*150 = 750 kg m/s
The net momentum will carry then forward when they are "stuck" together at the goal line. 
tsacker = tackler

so they both stop exactly at the goalline or he scores? from what you said he scores

I said "The net momentum will carry then forward when they are "stuck" together at the goal line."
Forward means across the goal line. Yes, it's a touchdown.
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