A 4.0 kg mass stone is thrown vertically upwards at a speed of 20 m/s. I) determine the maximum height it reaches.
II) Determine your speed when in the
half of its maximum height.
III) Determine the total mechanical energy at this point. of
work performed by the gravitational force from the launch point to the return to that point.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

this would be about 43%

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2