A 500kg roller coaster is moving at 10 m/s on a straight portion of frictionless track. You need ___ Newtons of force to keep the train moving at a constant velocity. How many newtons??

1 Answer
ky
May 31, 2018

0 Newtons

Explanation:

1st law of Newton's law states that an object in motion will remain in motion unless acted upon an external force. Therefore, if the track is "frictionless", the object will remain at 10m/s.

Newton is a unit of force, so 0 newtons is required to keep the object in motion.

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