Read the text very carefully to understand all the words. Then play the audio. The audio contains the same text plus an additional paragraph. At the end of the listening describe how the different forces affect your body.
Roller Coasters and Your Body
This dictionary will help you.
Your body feels acceleration in a funny way. When a roller coaster car is speeding up, the actual force acting on you is the seat pushing your body forward. But, because of your body’s inertia, you feel a force in front of you, pushing you into the seat. You always feel the push of acceleration coming from the opposite direction of the actual force accelerating you.