How would a planet move if the sun suddenly disappeared

If all planets were to suddenly stop orbiting the sun they would be pulled toward the sun. However, if the sun were to suddenly vanish then all the planets would retain their forward motion and be pulled in a straight line into space along with any asteroids and comets. Once out in space, the planets would go in that straight line for many thousands of years until going into another solar system. Unless they crash into something like another one of the planets that used to orbit our sun as well.

Anything in orbit around the Sun is basically moving fast enough to be in a constant state of freefall towards it. If the planets, for example, suddenly stopped moving they would immediately be pulled towards the Sun and fall into it.

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Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.