As you push a cereal box across a tabletop, the sliding friction acting on the cereal box

a.) acts in the direction of motion.

b.) equals the weight of the box.

c.) is usually greater than static friction.

d.) acts in the direction opposite of motion.

2.) Projectile motion is caused by

a.) the downward force of gravity.

b.) the initial forward velocity.

c.) a final vertical velocity.

d.) the downward force of gravity and an initial forward velocity.