A. Calculate the work done if a 24 Newtown force is applied on an object and the object moves 8 cm in the direction of the force.

b. i. What kind of energy conversion occurs if a person is riding a bicycle.

ii. What kind of energy is in the bicycle if it is moved from a certain point A from another certain point B

c. Explain the energy conversion in falling body which is falling from a height of 50 m and has a weight of 20 kg.

i. Calculate the potential energy of the body when it is 50 m above the ground.

ii. What is the kind of thing energy of the body when it hits the ground if there is no air friction.

d. Suppose Jack and Jill is taking the same object in the first floor. The first floor is 3 m above the ground. Jack takes up a perpendicular ladder to take the object in the first floor and Jill takes the stairs. Who did the most work in this situation? Explain your answer.