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  1. ...that the relative velocity between the two colliding objects after impact is zero. In other words, the two objects move with the same velocity Vc (say) after collision . Loss of kinetic energy E = initial kinetic energy (Ei) - final kinetic...

    分類:科學及數學 > 物理學 2016年12月23日

  2. ...electron may need to undergo a number of collisions with the material atoms before it escapes from the material. The is the main reason for the variation in kinetic energy of the photo-electrons...

    分類:科學及數學 > 物理學 2016年11月05日

  3. ... object, not necessary gas, with a temperature emits electromagnetic... radiation so emitted is caused by collisions between molecules in the object, which possess thermal kinetic energy...

    分類:科學及數學 > 物理學 2016年11月05日

  4. (a) Find the value of m2. m1*v1 = m1*v1' + m2*v2' m2 = m1(v1 - v1')/v2' = m1(v1 - v1')/(4v1/5) = 5m1(v1 - v1')/4v1 (b) Find the relation between v1' and v1. m2 = 5m1(v1/4v1 - v1'/4v1) m2/5m1 = 1/4 - v1'/4v1 v1'/4v1 = 1/4 - m2/5m1 v1'/v1 = 1/16 - m2/20m1 v1' = v1(1/16...

  5. ... impulse = integral{F(t).dt} with limit of integration from t = 0 to t = 2(to) where to is the original impact time. 2015-08-03 15...impact time", which usually used in the case of collision . 2015-08-03 15:52:46 補充: Q...

  6. ...the ball. 2015-07-04 00:43:07 補充: In 5b, the ball doesn't rebound...), hence its final momentum is zero. 2015-07-04 00:45:15 補充... there is NO collision at all, as there is NO...

  7. 1. Where is the diagram? 2. (a) Use momentum conservation 0.08 x 3 = (0.08 + m) x 1.6 where...kg (b) Force = 0.07 x 1.6/1 N = 0.112 N The force is frictional force. 3. (a) The final momentum is the resultant of the individual...

  8. ... for 4.6 s by the collision with car B? The most simple approach is to find the speed of car A after collision using conservation of momentum. But in this case, if the two cars are ...

  9. ... impulse = change of momentum of the block F(0.2) = 1 x 5 where F is the force acts on the block F = 25 N 2. (a) Fall in height of the person = (30 - 2.75) m = 27.25 m Use equation: v^2 = u^2 + 2as...

  10. ... ∴ The speed of truck Q before the collision was 18.5 ms⁻¹ to the front. 2015-06-16 21:34..., If the can travels together with the stone after the collision , asking the velocity...