**Advanced Physics Study Guide – Newton's First and Second Laws**

____ 1. What is the cause of an acceleration or a change in an object’s motion?

____ 2. What causes a moving object to change direction?

_____ 3. Show the gravitational force acting on the car, given its free-body diagram.

____ 4. Given a free-body diagram, describe each force shown.

____ 5. Draw a free-body diagram of a ball in free fall in the presence of air resistance.

_____6. Show the gravitational force acting on a balloon, given its free-body diagram.

____ 7. What is the tendency of an object to maintain its state of motion?

____ 8. A late traveler rushes to catch a plane, pulling a suitcase with a force directed 30.0° above the horizontal. If the horizontal component of the force on the suitcase is 60.6 N, what is the force exerted on the handle?

____ 9. A sled is pulled at a constant velocity across a horizontal snow surface. If a force of 8.0 * 10^{1} N is being applied to the sled rope at an angle of 53° to the ground, what is the force of friction between the sled and the snow?

____ 10. Describe the motion of an object being acted up by a nonzero net force.

____ 11. A wagon with a weight of 300.0 N is accelerated across a level surface at 0.5 m/s^{2}. What net force acts on the wagon? (*g* = 9.81 m/s^{2})

____ 12. Know the relationship between net force, acceleration and mass in terms of directly and inversely proportional.

____ 13. According to Newton’s second law, when the same force is applied to two objects of different masses, how will the resulting accelerations differ?

____ 14. Given two perpendicular forces that act simultaneously on an object with a certain mass, find the magnitude of the resultant acceleration of the object.

____ 15. A sailboat with a mass of 2.0 * 10^{2} kg experiences a tidal force of 3.0 * 10^{3} N directed to the east and a wind force against its sails with a magnitude of 6.0 * 10^{3} N directed toward the northwest (45° N of W). What is the magnitude of the resultant acceleration of the boat?

____ 16. An airplane with a mass of 1.2 * 10^{4} kg tows a glider with a mass of 0.60 * 10^{4} kg. If the airplane propellers provide a net forward thrust of 3.6 * 10^{4} N, what is the acceleration of the glider?

____ 17. An elevator weighing 2.00 * 10^{5} N is supported by a steel cable. What is the tension in the cable when the elevator is accelerated upward at a rate of 3.00 m/s^{2} ? (*g* = 9.81 m/s^{2})

____ 18. The magnitude of the force of gravity acting on an object is called the _____ of the object.

____ 19. A measure of the quantity of matter is the object’s _____ .

____ 20. A change in the force of gravity acting on an object will affect the object’s _____.

____ 21. A sled weighing 1.0 * 10^{2} N is held in place on a frictionless 20.0° slope by a rope attached to a stake at the top. The rope is parallel to the slope. What is the normal force of the slope acting on the sled?

____ 22. A crate is carried in a pickup truck traveling horizontally at 15.0 m/s. The truck applies the brakes for a distance of 28.7 m while stopping with uniform acceleration. What is the coefficient of static friction between the crate and the truck bed if the crate does not slide?

____ 23. An ice skater moving at 10.0 m/s coasts to a halt in 1.0 * 10^{2} m on a smooth ice surface. What is the coefficient of friction between the ice and the skates?

____ 24. An Olympic skier moving at 20.0 m/s down a 30.0° slope encounters a region of wet snow and slides 145 m before coming to a halt. What is the coefficient of friction between the skis and the snow?