Physics

Problem

13. A 50 kg skater at rest on a frictionless rink throws a 2 kg ball, giving the ball a velocity of

10 \mathrm{~m} / \mathrm{s}

. Which statement describes the skater's subsequent motion? (A)

0.4 \mathrm{~m} / \mathrm{s}

in the same direction as the ball's motion. (B)

0.4 \mathrm{~m} / \mathrm{s}

in the opposite direction of the ball's motion. (C)

2 \mathrm{~m} / \mathrm{s}

in the same direction as the ball's motion. (D)

2 \mathrm{~m} / \mathrm{s}

in the opposite direction of the ball's motion. (A)

0.4 \mathrm{~m} / \mathrm{s}

in the same direction as the ball's motion. (B)

0.4 \mathrm{~m} / \mathrm{s}

in the opposite direction of the ball's motion. (C)

2 \mathrm{~m} / \mathrm{s}

in the same direction as the ball's motion. (D)

2 \mathrm{~m} / \mathrm{s}

in the opposite direction of the ball's motion.