1. Strzała o masie 20 g tuż po wystrzale ma prędkość 50 m/s. Oblicz pracę wykonaną
przez zawodniczkę. Ile wynosi energia potencjalna sprężystości napiętej cięciwy?

2. Na trampolinę o współczynniku sprężystości k=2 kN/m stanął zawodnik o masie 80 kg. O ile obniży się krawędź trampoliny?

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving