Chapter 6 Study Guide
Newton’s Second Law of Motion
What is the formula for Newton’s 2nd law?
What causes an object to accelerate?
How does an increase in mass affect acceleration?
What is terminal velocity?
What is the acceleration of a falling object that has reached its terminal velocity?
What is friction?
What factors affect the force of friction between surfaces?
What is the sum of all forces acting on an object called?
In a tug of war, when one team is pulling with a force of 100 N and the other 80
N, what is the net force?
10. What is the acceleration produced by a 45 N force applied to a 1.25 kg ball?
11. What is the acceleration of a car stopping with 254 N of force if it has a mass of
2500 kg?
12. What force is needed to give a 2 kg mass an Acceleration of 8 m/s2?
13. What is the net force acting on a 4-kg mass if it is accelerating at a rate of 4 m/s2?
14. How much net force is required to accelerate a 2000 kg car at 3.00 m/s2?
15. If you apply a net force of 3 N on a 100 kg-box, what is the acceleration of the
box?
16. What is the net force on 0.20 kg ball when it hits a wall with acceleration of 10 m/s2?
17. How much air resistance acts on a falling 100 N box of nails when it reaches
terminal velocity?
18. What is the force of gravity on a falling object called? How do you find it? Will
it be different for objects with different masses?
19. What will be the acceleration of all falling objects on earth?
20. Why do all falling objects on earth have the same the same acceleration?
21. How does an increase in force affect acceleration?
22. If an object is sliding across the floor and the force of friction is 75N, what force
must be applied to maintain a constant velocity?
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Problems
1. Suppose an object is pushed along the floor with a force of 20N and the force of
friction is 4N. What is the acceleration of the object if its mass is 12kg?
2. What is the acceleration of an object falling if the force of friction of 200N and
the object is 60kg?
3. What is the acceleration of an object after being released where friction is 45N
and the mass is 5kg?
4. What is the acceleration of a pair of connected masses where one mass of 200 kg
hangs off a table and the other on a frictionless table has a mass of 1000 kg?