1. A 10 kg rocket blast off the ground with an applied force of 150 N, calculate the net force of your rocket

Despite the Church claims to a geocentric model (Earth is the center of solar system) , people begin to think of the heliocentric model ( Sun is the center of solar system), earlier proposed by Nicolaus Copernicus. 
Also, people began to dissect human bodies to find out more about the study of anatomy.