Why did the nuclei of the original Shoemaker-Levy 9 comet break into many pieces?
A.
because of the gravitational pull of the Sun
OB.
because of the gravitational pull of Saturn
C.
because of the gravitational pull of Jupiter
OD
because of the gravitational pull of Neptune

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

If a star is moving toward earth, it is

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.