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1. How much force is needed to do a 650.0 J of work on a 50.00 kg box that is being pushed to a distance of 8 m? (3 pts)

2. What is the velocity of an 800-g sack falling from a helght of 525.00 meters right before it hits the ground? (5 pts)

3. A man stood right in front of the door of a square room that is 12 m wide. How much work did he do if he pushed against a 500-kg box for 860.0 s to move it to the opposite wall but it did not move? (3 pts)

4. A machine did 2 850 J of work to lift a 1 300.00-kg old car. a) How high was the machine able to move the car? What is the car's potential energy at this height (the height in 'a')? (4 pts)

with solutions. nonsense=report.​

Sagot :

Lizanadumamaganda21idn

Answer:

thx for points :)

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