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  1. upward 相關
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  1. ...force that cancel out the effect of weight is needed Consider upward direction be positive So, Force = rate of change of momentum + weight...

  2. ...will feel HEAVIER (較重) Because by looking at acceleration, upward Force > downward Force Normal reaction> ...

  3. Use equation of motion: s = vt - (1/2)gt^2 for the upward journey with s = 37.5 ft., v = 0 m/s, t = 5/2 s = 2.5 s, a = -g (the acceleration...

  4. ... due to the reaction exerted on the scale by the man Take upward be positive By Newton’s 2nd law of motion, R – mg...

  5. ...table. The table is giving the object a normal reaction F=mg upward , or else the table will break and the object will fall down. But remember that if...

  6. ... point downward Tension, T = 120 N pointing upward Let F be the force for acceleration By Newton's...

  7. When the stone is projected vertically upward and returns to the orginal position, it is undergoing free ...

  8. ... = Buoyancy In physics, buoyancy is the upward force on an object produced by the surrounding fluid (i.e., a liquid...

  9. Let upward be positive. a) v^2=u^2+2as, a=-g=-10, v=0, u=10 100=20s, s=5m b) ...

  10. ... the initial speed as Vo(m/s), using a coordinate with y-coordinate upward as positive. Since the air resistance is negligible, so when the ball...

    分類:社會及文化 > 語言 2012年12月03日

  1. upward 相關
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