A Large Wedge with a Mass of 10 Kg Rests

question 86

Multiple Choice

A large wedge with a mass of 10 kg rests on a horizontal frictionless surface, as shown.A block with a mass of 5.0 kg starts from rest and slides down the inclined surface of the wedge, which is rough.At one instant the vertical component of the block's velocity is 3.0 m/s and the horizontal component is 6.0 m/s.At that instant the velocity of the wedge is:

• A)3.0 m/s left
• B)3.0 m/s, right
• C)6.0 m/s, right
• D)6.0 m/s, left
• E)17 m/s, right

---

Definitions:

Short-run Phillips Curve

A graphical representation in economics showing a short-term inverse relationship between inflation and unemployment rates.

Long-run Aggregate-supply Curve

Represents the total quantity of goods and services that producers in an economy are willing and able to supply at different price levels when all production inputs are variable.

Short-run Aggregate-supply Curve

A curve in macroeconomics that shows the relationship in the short run between the price level and the quantity of goods and services that firms are willing and able to supply.

Long-run Phillips Curve

The long-run Phillips Curve illustrates the relationship between inflation and unemployment when expectations of inflation are fully adapted, often showing no trade-off between inflation and unemployment in the long run.