9Ia Forces and movement (page 130-131)
9Ic Speed (136-137)
9Id Turning forces (140-141)
9Ie More machines (142-143)
9Ja Force Fields (146-147)
9Jb Static electricity (150-151)
9Jc Current and electricity (152-153)
9Jd Resistance (154-155)
9Je Electromagnets (158-159)