# Physics: application of newton’s laws

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**Due by Sunday 8/11 @ 11pm EST**

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The following questions ask you to solve problems involving Newton’s laws and forces

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**Work out each problem and post an image of your work for each question along with a brief description of how you solved the problem.**

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**Your scanned work should include a free body diagram showing all forces acting on the object(s), as well as a step-by-step solution to the problem**.

**Question 1 **

A 2 kg book resting on a flat table requires an applied force of 4 N to make it move. Draw a free body diagram illustrating this situation and find the coefficient of static friction between the book and the table.

**Question 2 **

A 30 kg crate is pulled across a flat floor with 80 N of force. The coefficient of kinetic friction between the crate and the floor is 0.15. Draw a free body diagram illustrating this situation and find the acceleration of the crate.

**Question 3 **

An applied force of 100 N causes a 20 kg crate to accelerate across a level floor at 2 m/s^{2}. Draw a free body diagram illustrating this situation and find the coefficient of kinetic friction between the crate and the floor.

**Question 4 **

60 N of force is applied to a 10 kg crate initially at rest on a level floor. The coefficient of friction between the crate and the floor is 0.4. Draw a free body diagram illustrating this situation and find the distance traveled and the velocity of the crate after 3 seconds.

**Question 5 **

Sue and Bill are standing on a frictionless surface of ice. Sue, whose mass is 60 kg, pushes Bill, mass 100 kg, with 300 N of force. Draw a free body diagram illustrating this situation and find the acceleration of both Sue and Bill.