## Q C Review. While learning to drive, you are in a 1200 -kg car moving at 20.0m/s across

Q C Review. While learning to drive, you are in a 1200 -kg car moving at 20.0m/s across a large, vacant, level parking lot. Suddenly you realize you are heading straight toward the brick sidewall of a large supermarket and are in danger of running into it. The pavement can exert a maximum horizontal force of 7000N on the car. (a) Explain why you should expect the force to have a well-defined maximum value.

## A particle of mass m= 1.18kg is attached between two identical springs on a frictionless,

A particle of mass m= 1.18kg is attached between two identical springs on a frictionless, horizontal tabletop. Both springs have spring constant k and are initially unstressed, and the particle is at x=0(d) If the particle is pulled 0.500m to the right and then released, what is its speed when it reaches x=0?

## L Corporation produces and sells 15,200 units of Product X each month.

L Corporation produces and sells 15,200 units of Product X each month. The selling price of Product X is \$22 per unit, and variable expenses are \$16 per unit. A study has been made concerning whether Product X should be discontinued. The study shows that \$73,000 of the \$102,000 in monthly fixed expenses charged to Product X would not be avoidable even if the product was discontinued. If Product X is discontinued, the annual financial advantage (disadvantage) for the company of eliminating this product should be: Multiple Choice (\$39,800) \$39,800 (\$62,200)

## A study that seeks to understand the differences between gangs uses what unit of analysis?

A study that seeks to understand the differences between gangs uses what unit of analysis?

## Find the slopes of the straight lines that pass through the following sets of points: (a)

Find the slopes of the straight lines that pass through the following sets of points: (a) (0,-4) and (4,2) (b) (0,0) and (2,-5) (c) (-5,2) and (4,-2) Answers(a) 3/2 (b) -5/2 (c) -4/9