A police officer uses a radar gun to determine the speed of a car. A specialized radar gun uses ultraviolet light to determine t
2 answers:
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Answer:
a = - 0.209 [m/s²]
Explanation:
To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.
∑F = m*a
We will take the positive forces to the right and the negative forces to the left.
The negative sign means that the box accelerates in a negative direction to the left.