Pierre lifts a 60-kg crate onto a truck bed 1 m high in 3 s. marie lifts twenty-four 2.5-kg boxes onto the same truck bed in a time of 2 min. which of the following statements concerning work and power are true?

Pierre operates at a greater power level than Marie.

Marie and Pierre do  the same amount of work

Step-by-step explanation:

Mass of crate=60kg

Height of truck bed=1 m

Time=3s

Pierre's work done=

Using formula Work done=mgh

Where m=mass of object

g=Acceleration due to gravity=9.8

Power=

Using the formula

Pierre's power=

Mass of box=2.5Kg

Total number of boxes=24

Total mass of boxes=

Time=2 min=

1 min=60 s

Marie;s work done=

Marie's power=

Pierre operates at a greater power level than Marie.

Marie and Pierre do  the same amount of work

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7