Ther was a writer"
quiz: post-lab 1
2 ways to calculate average velocity - wikihow
a tennis ball is dropped from 1.62 m above the
ground. it rebounds to a height of 0.963 m.
with what velocity does it hit the ground?
the acceleration of gravity is 9.8 m/s? . (let
down be negative.)
|answer in units of m/s.
007 (part 2 of 3) 10.0 points
with what velocity does it leave the ground?
answer in units of m/s.
008 (part 3 of 3) 10.0 points
if the tennis ball were in contact with the
ground for 0.0102 s, find the acceleration
given to the tennis ball by the ground.
answer in units of m/s2.

Why there is no inductive reactance in dc circuits

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Which situation will produce the greatest change of momentum