3. 100 200 400 300 400 Inertia or Weight? Newton’s 1 st & 2 nd Laws Name that Force Newton’s 3 rd Law 300 200 400 200 100 500 100

4. Row 1, Col 1 Inertia is a measure of an object’s What is mass (tendency to resist a change in motion)?

5. 1,2 A 10 N falling object encounters 4 N of air resistance. What is the magnitude of the net force acting on the object. What is 6 N?

6. 1,3 A force which is always in the opposite direction compared to an object’s motion. What is friction?

7. 1,4 If a baseball player bats a ball with a force of 1000 N, the ball exerts a _____reaction force against the bat. What is 1000 N?

8. 2,1 Your gravitational attraction to the earth is a measure of your _____. What is weight (or gravitational force)?

9. If a crate is moving with constant velocity when being pulled with a pull force of 500 N, what is the Net Force acting on the crate? 2,2 What is zero?

10. 2,3 What is the force which acts during Free Fall? What is a gravitational force (or force of gravity)?

11. 2,4 The force of the earth pulling on a person’s body is called weight. The reaction to this force is What is the person’s body pulling on the earth?

12. 3,1 One object has twice as much mass as a second object. The first object will also always have twice as much What is inertia?

13. 3,2 A bus has a mass of 8,000 kg and accelerates at 2 m/s 2. What is the magnitude of the force acting on the car? What is 16,000 N?

14. 3,3 A force that acts due to the presence of air. What is air resistance (or drag)?

15. 3,4 A car traveling at 100 km/h strikes a hapless bug and splatters it. Compared to the force of impact on the car, the force of impact on the bug is What is the same?

16. 4,1 A bag of groceries has a mass of 10 kg and a weight of about What is 100 N?

17. 4,2 A round rock weighs 30 N on Earth. A square rock weighs 30 N on the Moon. Which rock has more mass? What is the square rock?

18. 4,3 A force in a rope, cable, chain or string. What is a tension force?

19. 4,4 Two people pull on a rope in at tug-of-war. Each pulls with 400 N of force. What is the tension in the rope? What is 400 N?

20. 5,1 What is the net force and corresponding acceleration of the box (mass of the box is 2 kg)? What is 3 N upwards & 1.5 m/s 2 ? 5 N 4 N 8 N 12 N 2 N

21. 5,2 A 2000 kg car has a braking force of 10,000 N as it skids to a stop in 6 seconds. What was the initial velocity of the car? What is 30 m/s?

22. 5,3 A supporting force which is perpendicular to a surface. What is a normal force?

23. 5,4 A reaction force which causes a horse to walk forward. What is the force of the ground pushing on the horse’s hooves?