Why is rolling a ball down a hill considered an unbalanced force?

2 answers:

7 0

Friction is what makes the ball unbalanced. At one point the ball will stop rollin down the hill because of Friction the Friction made the ball balanced. Hopefully this helped you

SIZIF [17.4K]4 years ago

6 0

Answer:

An unbalanced force refers to the force that causes change in velocity that is causes acceleration of the body. An unbalanced force makes a body to change either its speed or direction or both.

Balanced forces are those which have equal magnitude but act in opposite direction. There is zero net acceleration.

A ball rolling down a hill, accelerates downwards because of gravitational force.

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A variação no comprimento de uma barra de alumínio foi de 0,0002m. Calcular a variação na temperatura a =22x10-⁶

Furkat [3]

Answer:

1.82°C

Explanation:

presumir inicial comprimento = l₀ = 5 m

dado que:

coeficiente de expansão (α) = 22 x 10⁻⁶, A variação no comprimento (ΔL) = 0.0002 m,

inicial comprimento = l₀ = 5 m