Follow the directions to solve the system of equations by elimination. 8x + 7y = 39 4x – 14y = –68 Multiply the first equation t
2 answers:
You might be interested in
Answer:
Step-by-step explanation:
To calculate Workdone we're going to use the formula:
where F = ma, and a = g = 9.81 ms^-2
m = 2.2 kg
g = 9.81
only the vertical displacement from the original position (i.e the floor) is important when it comes to calculating Workdone. So, she <u>lifts</u> the books 1.25m from the floor and she puts the books in the shelf which is 0.35m above the floor.
So the net distance (or displacement) from the floor is: 0.35m
hence d = 0.35m
Plugging all the values in the equation will yield: