Question

[0 iii. d) - 1600 J S [0] = a) - 2400 J b) - 800 J c) - 1000 J The change in kinetic energy of the man after climbing up the stair case is (g = 10 ms ) a) 2400 J b) 800 J COJ The increase in potential energy of the man is (g = 10 ms?) a) 3.5 kJ b) 4.5 kJ c) 8.1 kJ d) 1600 J iv. I di d) 3.2 kJ GOLD PACKAGE 6. A wire suspended vertically from one of its ends is stretched by attatching a weight of 200 N to the lower end. The weight stretches the wire by 1mm, then the elastic energy stored in the wire is ] a) 0.2 J b) 10 J c) 20 J dY0.1 J A body of mass 2 kg is thrown vertically upwards with an initial velocity of 20m/s. The potential energy at the end of 2.0 s is (g = 10 m/s2) [ ] a) 40 J b) 400 J c) 4000 J d) 40000 J 7. PLATINUM PACKAGE I/ A spring of force constant 800 N/m has an extension of 5 cm. The work done in extending it from 5 cm A to 15 cm is h] a) 16 J c) 32 J d) 24 J B) 8J​

Answer 1

Answer:

1st one answer is 0.1

2ed answer is 400

3 8

Answer 2

Answer:

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