{ "item_title" : "Kinetic Machines", "item_author" : [" Thames & Kosmos "], "item_description" : "Make five awesome machines and learn about the physics of force, motion, and energy. Construct a rubber band-powered race car that zooms across the floor. Build a catapult and launch objects through the air. Set up a launching device that propels a motorcycle across the floor at the push of a lever. Build a balancing dragonfly model and a weathervane to experiment with forces. A 28-page manual guides your model building and experiments with step-by-step illustrated instructions. ", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/0/81/474/301/0814743013438_b.jpg", "price_data" : { "retail_price" : "21.95", "online_price" : "21.95", "our_price" : "21.95", "club_price" : "21.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

Overview

Details add