The Acceleration Due to the Earth's Gravity, in English Units

question 20

Multiple Choice

The acceleration due to the Earth's gravity, in English units, is 32 ft/s². In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 60 miles/hr. For what time interval was the ball falling? (There are 5280 feet in one mile.)

• A) 5 s
• B) 6.1 s
• C) 4.125 s
• D) 2.75 s

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Definitions:

Reserve Requirement

The minimum amount of reserves a bank must hold against deposits, as mandated by central banking authorities to ensure banking system stability.

Tight Monetary Policy

A central bank policy aimed at reducing inflation and slowing down the growth in the money supply by raising interest rates and other measures.

Required Reserve Ratio

The fraction of deposits that banks are required by law to keep on hand as reserves or with the central bank.

Discount Rate

The interest rate charged by central banks to commercial banks for loans.