Aplanet has a period of revolution about the sun equal to tand a mean distance from the sun equal to r. t varies directly as
oa. r
o
o
o
o

Aball is thrown with a speed of 10 m/s at an angle of 65. which of the following statement describes the motion of the ball at the top of its trajectorya. the horizontal component of velocity is increasing b. the horizontal component of velocity is zeroc. the vertical acceleration is zerod. the vertical acceleration is constant