Question

D. Name the following
16. The type of friction between the wheels of a moving train and rails
17. The shape of the vehicles that helps to reduce friction due to air is
18. The friction that helps people climb a rock wall
19. The force with which the earth, moon, or other massively large objects attract another objects towards themselves
20. The force arising from the interactions with a surface as an object moves or tries to move relative to the surface​

Answer 1

Answer:

16. friction force

17. friction force in air

18. elastic force

19. suction power

20. gravity