bonnie pushes a box vertically up with a 300 N force, while clyde pulls the box up with a 350 N. The accelerates up at 1.2 m/s^2, what is the mass of the box? I got 66.44 kg, but I don't know if I'm right. Can someone help me?

the box accelerates up at 1.2 m/s^2. Sorry, my mistake.

they exert upward force while gravity exerts downward

f = m a ... 300 + 350 - (m g) = 1.2 m ... 650 = m (1.2 + g)

To find the mass of the box, we can use Newton's second law of motion, which states that force equals mass multiplied by acceleration (F = ma).

In this case, the net force acting on the box is the sum of Bonnie's and Clyde's forces:
Net force = Bonnie's force + Clyde's force = 300 N + 350 N = 650 N

Given that the acceleration of the box is 1.2 m/s^2, we can substitute these values into the equation:
650 N = mass x 1.2 m/s^2

To solve for the mass, divide both sides of the equation by the acceleration:
mass = 650 N / 1.2 m/s^2 = 541.67 kg

Therefore, the mass of the box is approximately 541.67 kg, which is different from your calculation of 66.44 kg. It seems like there might have been an error in your calculation.