9K+Key+Terms

9K Record breakers

9K Key Terms

 * accelerate || decelerate || m/s/s || speed ||
 * aerodynamicist || distance–time graph || mean speed || streamlined ||
 * air resistance || drag || metres per second (m/s) || supersonic ||
 * balanced forces || friction || miles per hour (mph) || terminal velocity ||
 * computer model || kilometres per hour (km/h) || resultant force || unbalanced forces ||