Apackage is pushed across a floor a distance of 50 feet by exerting a force of 15 pounds downward at an angle of 25 degrees with the horizontal. how much work is done?

The force is 679.73 ft-lb = 921.59J.

Step-by-step explanation:

The work is given by the following formula:

In which F is the force applied, d is the distance, and is the angle at which the force is applied.

In this problem, we have that:

So

ft-lb.

Each ft-lb has 1.356J. So the force is 679.73 ft-lb = 921.59J.

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.

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step-by-step explanation: