04/28/21

#### A 1200 kg car slows speeds up from 15 m/s to 30 m/s over a distance of 50 m. How much force was applied to the car?

I'm working on school work and I'm not sure how to solve this problem. Can someone please help.

02/08/21

A company has found that the number of items sold, x, depends upon the price, p at which they're sold, according the equation x=30400−2p^2The price has been increasing by $2 per month. Find the... more 02/08/21 #### Rotational Statics- Physics A wheel of diameter 70 cm has an axle of diameter 8 cm. A force of 130 N is exerted along the rim of the wheel. What force should be applied to the outside of the axle in order to prevent the wheel... more 02/08/21 #### Given f(x)= -x-3 ; g(x)= x^2 -2x+1 ; and h(x)= -2x ; find g x f x h The x's in the last sentence are supposed to be multiply signs sorry. 10/19/20 #### Relation & function If f(x) =x^2 - 2x, find: f(-3)= 10/19/20 #### A 140-kg crate is pushed along a level floor at a constant speed of 0.22 m/s. If the coefficient of kinetic friction is 0.36, the force of friction between the crate and the floor is most nearly... A 140-kg crate is pushed along a level floor at a constant speed of 0.22 m/s. If the coefficient of kinetic friction is 0.36, the force of friction between the crate and the floor is most... more 10/19/20 #### Solutions to Inequalities in One Variable Which graph correctly shows the solution to the inequality ? Show or explain your reasoning.ABCD 10/19/20 #### A rectangular “standing-only” section at the venue changes size as t increases in order to manage the flow of people. Let x represent the length, in feet, of the section, and let y represent the width, in feet, of the section. The length of the section is increasing at a rate of 6 feet per hour, and the width of... more 10/19/20 #### Is there a time t , for 1<t<8 , at which the rate of change of the number of people at the venue changes from negative to positive? Give a reason for your answer. "For time 0 ≤ t ≤ 8, people arrive at a venue for an outdoor concert at a rate modeled by the function A defined by A(t) = 0.3sin(1.9t) + 0.3cos(0.6t) + 1.3. For time 0 ≤ t ≤ 1, no one leaves the... more 10/08/20 #### Calculate the change in internal energy of the system in kJ. If a system absorbs 40 kJ of energy and does 11 kJ of work on the surroundings, calculate the change in internal energy of the system in kJ. For your answer, only type in the numerical value with... more 10/08/20 #### An investor invests$525 in stock. For the first six months,

the stock increased at a rate of \$25 per month. Identify the slope of the linear relationship. Explain what this means in the context of the problem. Identify the y-intercept of the linear... more

10/08/20

#### What is the slope of the line through the points (-4, 2) and (-16, -6)?

A: 3/2B:2/3C:-5/2D:2/5

10/08/20

#### The altitude (i.e., height) of a triangle is increasing at a rate of 2.5 cm/minute while the area of the triangle is increasing at a rate of 3.5 square cm/minute.

The altitude (i.e., height) of a triangle is increasing at a rate of 2.5 cm/minute while the area of the triangle is increasing at a rate of 3.5 square cm/minute. At what rate is the base of the... more

10/08/20

#### Draw a free-body diagram of the airplane, including air drag. Identify as many forces as you can think of but do not try to calculate them. (full question below)

An airplane passes by overhead. The plane has a mass of 50,000 kg, is at an altitude of 10,000 meters and moves at a constant velocity of 150 m/sec. The altitude, velocity and direction of travel... more

10/01/20