Two boys push on a box. One pushes with a force of 125 N to the east. The other exerts a force of 165 N to the north. What is the magnitude of the resultant force on the box?

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.