Someone please help me please

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Name the intersection of plane bpq and plane cpq.

If two objects at different te,peraure are in contact with each other what happens to their temperature