Friction: a Pickup Truck Is Moving at 25 M/s with a Toolbox

question 49

Short Answer

Friction: A pickup truck is moving at 25 m/s with a toolbox of mass m resting on the bed of the truck 2.5 m behind the cab. Suddenly the brakes are applied, causing the toolbox to slide, and the truck comes to a stop in 4.7 s. The coefficient of kinetic friction between the toolbox and the bed of the truck is 0.28. After the brakes are applied, how much time elapses before the toolbox strikes the cab?

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Definitions:

Combined Leverage

Refers to the use of both operating and financial leverage by a company to assess the potential impact on earnings due to changes in sales.

Degree of Financial Leverage

A measure that quantifies the sensitivity of a company's earnings per share to fluctuations in its operating income due to the use of fixed cost financing.

Earnings per Share

A company's net profit divided by the number of its common shares outstanding, indicating the company's profitability on a per-share basis.

EBIT

Earnings Before Interest and Taxes; a measure of a firm's profit that includes all expenses except interest and income tax expenses.