For This Question,assume That All Velocities Are Horizontal and That $\times$

question 18

Multiple Choice

For this question,assume that all velocities are horizontal and that there is no friction.Two skaters A and B are on an ice surface.A and B have the same mass M = 90.5 kg.A throws a ball with mass m = 200 g toward B with a speed v = 21.5 m/s relative to the ice.B catches the ball and throws it back to A with the same speed.After A catches the ball,his speed with respect to the ice is

• A)4.3 \(\times\) 10³ m/s
• B)4.3 m/s
• C)4.8 \(\times\) 10^-2 m/s
• D)9.5 \(\times\) 10^-2 m/s
• E)0.34 m/s

---

Definitions:

Windward Side

The side of a mountain or island that faces the direction from which the wind is coming, often receiving more rainfall.

Temperate Regions

Areas of the Earth characterized by moderate temperatures, neither extremely hot nor cold.

Abiotic Factors

Elements of the nonliving, physical environment that affect a particular organism. Compare with biotic factors.

Temperature

A measure of the average kinetic energy of the particles in a system, indicating how hot or cold the system is.