Watch an Astronaut Test Newton's Second Law of Motion in Space

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Alice Bazyar
Gateways
Force and Motion Blog
December 17th, 2018

Watch an Astronaut Test Newton's Second Law of Motion in Space

In a recent video, NASA’s astronaut Randy Bresnik, declare the most newest installment of NASA’s educational series STEMonstrations and shows the connection between Newton’s second law of motion by sending three objects into a free flight in the International Space Station.


STEMonstrations is presented by astronauts living in the space station. NASA brings in sponsors from 6th, 7th, and 8th graders and shows their educational videos done by the professional astronauts.

What is Newton’s second law of motion? “Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.” according to https://www.physicsclassroom.com/class/newtlaws/Lesson-3/Newton-s-Second-Law. As into this case, astronauts used the formula F = ma to where F is the force which equals to M which is the mass times A, who is the acceleration. So, in a case of a rocket, the heavier the spacecraft is, the more force it needs in order to make the engine start.

During the video, Bresnik uses a bendy slingshot to put a chapstick, a miniature replica of a space capsule, and a large storage bag all into motion. Within seconds, the chapstick goes flying faster than the bag because of the force being constant and balanced, rather than the bag not being able to take the acceleration.

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