a 1 kg textbook has been pushed and let go sliding to the left on a flat table no one is pushing the book at this moment. it is sliding

a. calculate the weight of the textbook? How do I do these calculations?
b. based on this weight, what must the normal force from the table be on the book?
c. if the friction force is 5N in magnitude, what is the acceleration of the book?
d. is the book speeding up or slowing down? I said it is slowing down

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  1. a. weight = mass * g

    b. normal force equals weight
    ... but in opposite direction

    c. Newton's 2nd law ... f = m a
    ... in this case ... a = f / m

    d. correct

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