2006-12-11 14:30:18 · 9 answers · asked by bhangraking777 1 in Science & Mathematics ➔ Physics
The rolling skateboard. If an object is at rest, then it doesn't have momentum. Because the skateboard has speed and mass it will have momentum.
2006-12-11 14:43:06 · answer #1 · answered by Blue 4 · 0⤊ 0⤋
The other's answering this question are forgetting something important. Relativity.
Nothing is ever truely at rest, only at rest in comparison to other things.
The truck is moving, just like the earth is moving. The Solar System is moving. The Galaxy is moving.
So, as an observer standing next to the truck, the truck has no motion relative to you. So, answering on the assumption that I am an observer standing next to the truck and watch a skateboard roll by, yes the Skateboard has more momentum.
Momentum is a feature of objects in relative motion. It's a measure of the ammount of force required to bring a moving object to a stop.
The truck is not moving, relative to you, so the energy required to stop it is Zero.
The Skateboard is moving and requires energy to stop it greater than Zero. Meaning the skateboard has more momentum, since more force is required to stop it.
2006-12-11 14:47:45 · answer #2 · answered by socialdeevolution 4 · 0⤊ 0⤋
Greater Momentum
2016-12-12 10:45:40 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Answer: A rolling skateboard.
Momentum = Speed x Mass
Since a stationary heavy truck has "0" speed, its momentum is 0.
A rolling skateboard has some mass and some speed. That is larger than "0".
2006-12-11 14:32:39 · answer #4 · answered by Anonymous · 1⤊ 0⤋
At relax = 0 momentum so the moving skateboard wins it somewhat is barely relative to the earth, by using fact on the equator, the truck is moving at a million,000 mph and the skateboard is moving at say 1005 mph The earth spins around in a million day and is extra or less 24,000 miles in circumference so each and each element on it strikes at 24,000/24 mph on the south pole the skateboard has extra momentum lower back, till you count style the earth moving around the solar, etc
2016-12-30 07:12:56 · answer #5 · answered by belis 3 · 0⤊ 0⤋
The rolling skateboard. Momentum is mass times velocity. No velocity means no momentum.
2006-12-11 14:32:02 · answer #6 · answered by Anonymous · 1⤊ 0⤋
How could anything at rest have momentum?
2006-12-11 14:33:12 · answer #7 · answered by Funnel 5 · 0⤊ 0⤋
A dictionary does wonders when you're doing homework.
Did you even bother to look up momentum in your glossary?
2006-12-11 14:32:44 · answer #8 · answered by Anonymous · 0⤊ 0⤋
I think it is the truck, because it has more weight, and has potential energy.
2006-12-11 14:32:28 · answer #9 · answered by outwar_922 1 · 0⤊ 2⤋