An object is in projectile motion if it (CHOOSE ONE ANSWER OUT OF A, B, C, D) A. is thrown with a horizontal push

B. is accelerated downward by gravity

C. does not accelerate horizontally

D. All of the above

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Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?