QUESTION 3 A larger box slides across a frictionless surface and collides with and sticks to a smaller, stationary mass as shown in the illustration.
Because momentum is conserved, the final velocity of the two boxes together would be closest to which of the following?
O 1.2 m/s

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

In an experiment, how can i change human errors? be specific.