More science help please??

1 ⤊

More science help please??

Because of a frictional force of 2.6 N, a force of 2.8 must be applied to textbook in order to slide it along the surface of a wooden table. The book accelerates at a rate of 0.11 m/s to the 2nd power.

a. What is the unbalanced force on the book?

b. What is the mass of the book?

2006-11-19 10:12:56 · 3 answers · asked by Sarah S 1 in Science & Mathematics ➔ Astronomy & Space

3 answers

Get the unbalanced force from the first 2 #s in your ? : 2.8-2.6 = .2

b) F = ma---> m = F/a = 0.2/.11 = 1.818 kg

2006-11-19 10:20:13 · answer #1 · answered by Steve 7 · 0⤊ 0⤋

a) Subtract your two forces
b) Use Newton's Second Law and solve for mass.

2006-11-19 18:17:31 · answer #2 · answered by kris 6 · 1⤊ 0⤋

a) .2N
b) 1.81818Kg

2006-11-19 18:20:30 · answer #3 · answered by science teacher 7 · 0⤊ 0⤋