Question

Question 11 5 pts You perform an experiment in which you pull a carton a frictionless air track with a hanging mass. For the first run you place 5 slotted 20g masses on the car. You make 5 more runs. Each time removing 1 slotted mass and adding it to the hanger. You are venifying Newton's Second Law. What value are you holding constant? Omo ( Mm) ( Mm) Question 12 5 pts A rocket is designed to have constant thrust throughout its flight what does this mean for is motion? Velocity stays constant nec du coursew100564/ q1/669464/ake

Answer 1

11. The total mass of the system is constant. Thus M+m is constant option b is correct.

12.The thrust is constant but with time the mass of fuel keeps on decreasing so the acceleration of the rocket will keep on increasing until all the fuel burns up. Option c is the correct answer

13.The rocket does not require anything to push against to move. While the fuel is consumed it is ejected out of the rocket at high speeds. This develops high thrust force on the rocket to move opposite to the ejected mass. Thus Newton’s third law can help us in understanding the principle of rocket. Option b is correct