A spacecraft flying in a straight line with velocity of 75 km/s fires its rocket motors for only 6.0 s. At the end of this time, its velocity becomes 120 km/s. Further, it travels with the same constant velocity. i) Find the distance travelled by the spacecraft in the first 10 seconds after the motors were started. ii) Calculate the average velocity of the travel of the spacecraft.

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Chapter3: Vectors And Two-Dimensional Motion
Section: Chapter Questions
Problem 5WUE: A hiker walks 3.00 km north and then 4.00 km west, all in one hour and forty minutes, (a) Calculate...
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3. A spacecraft flying in a straight line with velocity of 75 km/s fires its rocket motors for only 6.0 s. At the end of this time, its velocity becomes 120 km/s. Further, it travels with the same constant velocity.
i) Find the distance travelled by the spacecraft in the first 10 seconds after the motors were started.
ii) Calculate the average velocity of the travel of the spacecraft. 
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