A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25m/s 2
1 answer:
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Hey there!
Let's call this "number" x. We want four times the sum of this number and 15 to equal at least 120.
Therefore, we want this number times four plus fifteen to be greater than or equal to 120. We have:
Distribute:
Subtract:
Divide:
Your answer is C.
Hope this helps!