Answer:
B
Explanation:
Adding a dopant is correct on edge.
Answer: 1 inclined plane and box mover trolley
2 screw and drill
3 The axle, or rod and wheels
4 slides, ramps, and hills.
5 yes because they help the ball move quicker
6 i am not sure about this one)
Explanation:i do not know i am guessing
The first person went further. s = d/t
Hope this helps you out APHDenmark! :D