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3 years ago

8

Strzała o masie 20g tuz po wystrzale ma prędkość 50m/s. Oblicz pracę wykonana przez zawodniczkę. Ile wynosi energia potencjalna

sprężystości napiętej cięciwy?

1 answer:

garri49 [273]3 years ago

6 0

Answer:

Explanation:

masie m = 20g = 20/1000 = 0.02kg

prędkość v = 50m/s

P.E = K.E = ½mv²

P.E = ½ × 0.02 × 50²

P.E = 25 J

pracę wykonana = P.E = 25J

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