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...force that cancel out the effect of weight is needed Consider upward direction be positive So, Force = rate of change of momentum + weight...
...will feel HEAVIER (較重) Because by looking at acceleration, upward Force > downward Force Normal reaction> ...
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...
... due to the reaction exerted on the scale by the man Take upward be positive By Newton’s 2nd law of motion, R – mg...
... point downward Tension, T = 120 N pointing upward Let F be the force for acceleration By Newton's...
When the stone is projected vertically upward and returns to the orginal position, it is undergoing free ...
... = Buoyancy In physics, buoyancy is the upward force on an object produced by the surrounding fluid (i.e., a liquid...
Let upward be positive. a) v^2=u^2+2as, a=-g=-10, v=0, u=10 100=20s, s=5m b) ...
upward 相關
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