A Man Pushes an 80-N Crate a Distance of 5

question 48

Multiple Choice

A man pushes an 80-N crate a distance of 5.0 m upward along a frictionless slope that makes an angle of 30°with the horizontal.His force is parallel to the slope.If the speed of the crate decreases at a rate of 1.5 m/s², then the work done by the man is:

• A)-200 J
• B)61 J
• C)140 J
• D)200 J
• E)400 J

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Definitions:

Annual Payments

Regular payments made once a year, often used in the context of loans, insurance, or annuities.

Compounded Quarterly

A method of calculating interest where the interest is added to the principal amount after every quarter, leading to interest earning interest in subsequent periods.

Future Value

Future value is the value of a current asset or amount of money at a specified future date, based on an expected rate of growth or return.

Annually Deposits

Regularly scheduled payments made into an account or investment every year.