Please generate responses for questions #1,3,and 7 ONLY in pics.

Answers already shown, please show the work.

Thanks!

1. How much work is done when a weight lifter lifts 200 kg from 1.5 m to 2.0 m above the ground? HIDE ANSWER 0 Answer: 980 1 3. A variable force of fun2 pounds moves an object along a straight line when it is :1: feet from the origin. Calculate the work done in moving the object from :1: : 1 ft to :13 : 10 ft. HIDE ANSWER 0 Answer: 4.5 ft-lb 7. A force of 10 lb is required to hold a spring stretched 4 in. beyond its natural length. How much work is done in stretching it from its natural length to 6 in. beyond its natural length? HIDE ANSWER 0 Answer: 15 ft-lb 4