A Bowling Ball, Moving to the East at a Speed

question 41

Multiple Choice

A bowling ball, moving to the east at a speed of 1.4 m/s, collides head-on with a stationary beach ball of the same diameter but less than one twentieth the mass. After the collision, the beach ball moves with a speed of 1.6 m/s. Which of the following is then true?

• A) The bowling ball has a velocity of slightly under 1.4 m/s, to the east.
• B) The beach ball has more momentum than the bowling ball.
• C) The bowling ball recoils to the west with nearly the same speed as before the collision.
• D) The bowling ball and the beach ball have the same momentum after the collision.

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Definitions:

Aggregate Demand Curve

A graph representing the total demand for goods and services within an economy at various price levels, typically downward sloping, indicating an inverse relationship between the price level and the quantity of aggregate demand.

Government Purchases

Spending by the government on goods and services that are directly consumed or invested in by the government sector.

Short-Run Aggregate Supply

The total production of goods and services in an economy at different price levels in a short time frame, assuming that some production costs remain fixed.

Spending Multiplier

The ratio of a change in national income to a change in government spending that causes it, indicating the impact of fiscal policy on the economy.