7. CALCULATE: How much work is done in each of the following examples? Show all of your
calculations.
a. A child uses 4 N of force to pull a wagon a
distance of 2 m along a sidewalk.
b. A construction worker uses 30 N of force
to drag a toolbox a distance of 3 m

a. 8J

b. 90J

W = F × s

W = Work done (J)

F = Force (N)

s = distance (m)

a. F = 4N

s = 2m

b. F = 30N

s = 3m

a. W = ..?

b. W = ..?

a. W = F × s

= 4N × 2m = 8J

b. W = F × s

= 30N × 3m = 90J

#Moderators please don't be mean, dont delete my answers just to get approval from your senior or just to get the biggest moderation daily rank.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.