College Physics

The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generated only a weak thrust, but it could do so over long periods of time with the consumption of only small amounts of fuel. The mission was spectacularly successful. At a thrust of 56 mN how many days were required for the probe to attain a velocity of 730 m/s (1630 mi/h), assuming that the probe started from rest and that the mass remained nearly constant?

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  1. force*time=mass*changevelocity

    time= 474*(1630-730)/.056
    = = 7617857.14 seconds= about 88 days

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  2. a stone propelled from a catapault with a speed of 50m/s attains a height of 100meters.calculate(a) time of flight (b)angle of projection (c)range

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