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]2 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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What will happen if a car experiences a 300 N force to the right from the engine and a separate 150 N force due to friction and

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Force applied on the car due to engine is given as

$F_1 = 300 N$ towards right

Also there is a force on the car towards left due to air drag

$F_2 = 150 N$ towards left

now the net force on the car will be given as

$\vec F_{net} = \vec F_1 + \vec F_2$

now we can say that since the two forces are here opposite in direction so here the vector sum of two forces will be the algebraic difference of the two forces.

So we can say

$F_{net} = F_1 - F_2$