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dimaraw [331]
3 years ago
13

A figure shows a vertically moving block on the end of a cord. The graph next to the figure gives the vertical velocity componen

t vy as a function of time to. The block's mass is 5.00kg. What is the tension in the cord?
Physics
1 answer:
Sergio [31]3 years ago
3 0
It should be 2/9/10 in functional form
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In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocit
ivolga24 [154]

Answer:

m_{receiver}=115Kg*3.1/(1.6)-115Kg=107.8Kg    

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The football players collide in a completely inelastic collision, in other words they have the same velocity after the collision, this velocity has a magnitude V=1.6m/s.

We need to use the conservation of momentum Law, the total momentum is the same before and after the collision, at the initial point the receiver does not have any speed

m_{tackler}*v_{tackler}=(m_{tackler}+m_{receiver})V     (1)

We solve in order to find the receiver mass:

m_{receiver}={m_{tackler}*v_{tackler}/V}-m_{tackler}    

m_{receiver}=115Kg*3.1/(1.6)-115Kg=107.8Kg    

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