The "***" is my answer
1. A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a distance of 4 meters to lift the box a distance of 2 meters. How much work is done?
A. 392 joules
B. 40 joules
C. 80 joules
D. 196 joules***
2. A person is lifting a heavy box using a lever. What is the purpose of the lever in this situation?
A. to reduce the energy needed to lift the box while keeping the direction of the force the same
B. to reduce the energy needed to life the box and change the direction of the force ***
c. to reduce the force needed to life the box while keeping the direction of the force the same
d. to reduce the force needed to lift the box and change the direction of the force
no, it's 392 joules
Yeah please help assignment is 3 days late cuz I’m worried Ima fail
Help
To answer the first question, we can use the formula for work: work = force × distance.
In this case, the force applied is 98 Newtons and the distance over which it is applied is 4 meters. Therefore, the work done is equal to 98 N × 4 m = 392 joules.
So the correct answer is A. 392 joules.
To answer the second question, the purpose of a lever in this situation is to reduce the energy needed to lift the box while keeping the direction of the force the same.
So the correct answer is A. to reduce the energy needed to lift the box while keeping the direction of the force the same.
its 196 joules
taking da test rn