Questions
If the particle is moving along a straight line given by the relation x = 2 - 3t + 4 where x is in cms., and t in sec. Its average velocity during the third sec is ?
detailed solution
Correct option is A
x = 2 - 3t + 4t3t = 2 ⇒ x2 = 2 - 6 + 32 = 28mt = 3 ⇒ x3= 2 - 9 + 108 = 101m vavg=x3-x23-2= 101-281=73cm/sTalk to our academic expert!
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A man moves from home to market which is at a distance of 2 km with a speed of 3 kmph. Finding the market closed he instantly returns home with a speed 6 kmph. The average velocity of the man in the total journey is
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