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Help Me With This Physics Questions. by reccy(m): 1:11am On Feb 04, 2020 |
1) Average velocity and instantaneous velocity are generally two different quantities. Can they ever be equal by a specific motion?? 2) If average velocity is not equal to zero, for some time interval, change in "T" , does it mean that the instantaneous velocity is never zero during the interval 3) If the velocity of a particles is zero, can it acceleration ever be non - zero and vice versa 4) Can the magnitude of a particles displacement be greater than distance traveled 5) Can the magnitude of a resultant be negative? |
Re: Help Me With This Physics Questions. by Martinez39s(m): 3:52am On Feb 04, 2020 |
reccy:Yes. If the displacement function s(t) is continuous on a closed interval, say [a , b ] and it's differentiable on (a , b ) then there exists at least a time, say c, in (a , b ) such that: s'(c) = [s(b) - s(a)]/(b - a)This is called the Mean Value Theorem. 2) If average velocity is not equal to zero, for some time interval, change in "T" , does it mean that the instantaneous velocity is never zero during the intervalThe instantaneous velocity can be zero. This is a no brainer na. 3) If the velocity of a particles is zero, can it acceleration ever be non - zero and vice versaIf the velocity of a particle is 0 then the acceleration is always zero. Remember that the acceleration function is the derivative of the velocity function. The derivative of zero is zero. 4) Can the magnitude of a particles displacement be greater than distance traveledHell no! 5) Can the magnitude of a resultant be negative?Magnitudes are always positive. |
Re: Help Me With This Physics Questions. by reccy(m): 1:44pm On Feb 04, 2020 |
Martinez39s: Waw...... Thanks boss.... I have something in pocket for my test.... |
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