energy cancellation

Adam and Jamie test various means that spies use to escape their pursuers in the movies. These include the testing of road spikes, oil slicks, and smoke screens. Kari, Grant, and Tory fire a soccer ball out of the back of a moving truck to try and create the illusion that it falls straight down. This is relative motion at its finest! Scientific concepts include low pressure zones, low frictional coefficients, vector addition, net forces, vector cancellation, zero net forces, relative motion, energy cancellation, and calibration testing.