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consider these four situations; a 3-kg ball at rest atop a 5-m-tall hill, a 4-kg ball at rest a 5- m-tall hill?
i need the answer to each of these situations i dont know how to do them haha
the questions are
a) rank from greatest to least the potential energy of each ball.
b)rank from greatest to least the kinetic energy of each ball
c)rank from greatest to least the total energy of each ball.
1 Answer
- Anonymous8 years agoFavorite Answer
a)
ball1: Ep=mhg=3kgx5mx9,81m/s^2=147,15N
ball2: 4kgx5mx9,81m/s^2=196,2N
b)
ball1: Ek=½mv^2=½x3kgx(0m/s)^2=0N
ball2: ½x4kgx(0m/s)^2=0N
c)
ball1: E=Ep+Ek=147,15N+0N=147,15N
ball2: 196,2N+0N=196,2N
Source(s): fysiikka2:lämpöoppi