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  1. ... the final velocity = 0 m/s average velocity in the upward journey = 20/2 m/s = 10 m/s 2. Use equation of motion... symmetry, velocity just hit the ground = initial upward velocity = 28.28 m/s (d) By symmetry, time to fall back...

  2. ...the block (vertically downward), the normal reaction on the block (perpendicular to the slope and upward ), the tension of the cable ( upward along the slope), and frintion on the block (also upward along...

  3. ... (Downward) = gT2/2 Displacement of B ( Upward ) = uT - gT2/2 Hence, gT2/2 + uT - gT2...

  4. ... tension T exerted by the string on the man is clearly upward . In lifting up the box, the man needs to pull down the string...

  5. collecting by upward deliver: 果樣既gas係比空氣輕,例如NH3(ammonia) collecting by downward deliver: 果樣既gas係比空氣重,例如Cl2,CO2,SO2 Using of gas syringe: 任何既gas都得

    分類:科學及數學 > 化學 2008年04月05日

  6. Takeg = 10 m/s² ==== 1. Take all upward quantities as positive. u = 20 m/s, a = -10 m/...) or u = -34.6 m/s Initial speed of the ball ( upward ) = 34.6m/s v = u + at 40 = -34.6 + (10)t t = 7.46 s ...

  7. set y = 2x^2 + 7x + 4 it is an opening- upward parabola with x-int -2.781 and -0.719 so 2x^2 + 7x + 4 < 0 => -2...

    分類:科學及數學 > 數學 2012年10月09日

  8. 1. As velocity is a vector, so if upward is mv , downward will be -mv. for momentum. So...this case. Also as the object is moved upward , PE will increases, and by the above, ...

  9. a) Taking all upward quantities as positive. Consider the journey of the first 4...

  10. ...rule: When there is a tax burden or a subsidy, the supply curve will shift upward or downward. This is because we assume that the tax / subsidy will be ...