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A dolphin is swimming under water at a constant speed of 4.50ms-1.
(a) The dolphin strikes the bottom of a floating ball so that the ball rises vertically upwards from
the surface of the water, as illustrated in Fig. 2.1.
h
path of
ball
height of
ball above
surface
ball
surface of water
speed 5.6 ms-11
Fig. 2.1
The ball leaves the water surface with speed 5.6 ms 1.
Assume that air resistance is negligible.
(0)
Calculate the maximum height reached by the ball above the surface of the water.

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.