6. A billiard ball traveling at 4.0 m/s has an elastic head-on collision with a billiard ball of equal mass
that is initially at rest. The first ball is at rest after the collision. What is the speed of the second ball
after the collision?
A) 4.0 m/s
B) 8.0 m/s
C) Not enough information to solve this problem
D) 4.0 kg m/s

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

14. a body is projected with velocity vi from a. at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is