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A hockey puck sliding at 60.0m/s slows uniformly to 20.0m/s while travelling 800.0m.
a) Determine the acceleration
b) Determine the time it took​

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Respuesta :

Caitlinthetrashcan
A) -3.75 meters/second
A=(20^2-80^2)/(2x800)
=(400-6400)/1600
=-6000/1600
=-3.75
B) 16 seconds
t=(20-80)/-3.75
=-60/-3.75
=16

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