An 8.2 kg object accelerates at 8.0 m/s^2. What is the acceleration?

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Explanation:

We know that F = ma,

or, a = F/m

or, a = 120/30 (because, Force = 120 N and mass = 30 kg)

or a = 4m/s^2

Hence, the acceleration of the object is 4 meter per second squared.

Acceleration: 8.0 ms^-2

Force: 65.6 N

Explanation:

I presume you meant what is the force, not the acceleration, as the acceleration is given in your question.

To find the force, use Newton's second law:

F = ma

  = 8.2 * 8

  = 65.6 N

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

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