Center of Mass
What is the formula for center of mass?
What is the summation of each mass times its x position divided by the total mass?
What is the relationship between change in momentum and impulse?
What is they are equal?
Momentum is equal to which quantities multiplied by each other?
What are mass and velocity?
What quantities are conserved in an elastic collision?
What are mechanical energy & momentum?
If a system is made of just the earth and the moon, the center of mass will be closer to which object?
When given a graph of force vs time, this operation is how you find impulse
What is integration?
Momentum is this kind of quantity, as indicated by the arrow above its symbol
What is a vector?
What is conserved in an inelastic collision?
What is momentum?
A firework is launched upwards in a parabolic path, but it explodes before it reaches the peak of the path. What is true about the firework's center of mass after the explosion?
What is it stays on the original path?
When must you use the integral for impulse?
What is when force is not constant?
What law was originally written as F = dp/dt?
What is Newton's 2nd Law of Motion?
What verb is associated with elastic collisions?
What is bounce?
Find the center of mass in (x,y) notation of these two points: 2 kg at (2,2), 1 kg at (3,4)
What is (7/3, 8/3)?
A car crashes into a wall and takes 0.004 seconds to come to a stop. A second car of the same mass crashes into the same wall at the same speed and takes 0.008 seconds to come to a stop. Which car experiences the greater impulse?
What is the second car?
An object at rest has this much momentum
What is 0 kg•m/s?
What happens to two objects after they perfectly inelastically collide?
What is they stick together / fuse?
Find the center of mass in (x,y) notation of this collection of points: 1 kg at (0,0), 2 kg at (2,0), and 3 kg at (0,3)
What is (2/3, 3/2)?
Why can you not throw a raw egg against the wall without breaking it, but you can throw it with the same speed into a sagging sheet without breaking it?
What is increased impact time caused by the sagging sheet resulting in less force on the egg?
SI units for momentum
What are kg•m/s?
An equation for the law of conservation of momentum
What is pi = pf OR mv1i + mv2i = mv1f + mv2f ?