Here's what you'll need to build your own Indoor Slingshot!
Make the plunger (i.e., the inner tube)
Punch two holes
Punch the holes half an inch from the end, opposite each other.
Insert the pencil
Attach the rubber bands
Assemble the blaster
Slide the plunger into the larger tube (called the “grip”).
Hook each rubber band around a pencil end.
Release the plunger. Watch your marshmallow blast across the room!
Ever jump on a trampoline? When you push the trampoline’s surface down, you store energy in the springs. Stored energy is called potential energy. You go flying back up when the stored energy changes to motion energy (called kinetic energy). In your slingshot, pulling the plunger back increases the rubber band’s potential energy. Let go, and the potential energy turns into kinetic energy—the marshmallow goes flying. Bows-and-arrows and shock absorbers on a bike use potential and kinetic energy to work.
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