1. To calculate the net force you ___________ all the forces acting in the same direction. Velocity net force, motion, add, opposite, acceleration,

2. Add TAKS REVIEW CIRCUIT #1-50 There are always forces acting on an object. The total force acting on an object is called the_______________. net force, motion, add, opposite, acceleration,

3. If there are forces acting in ____________ directions, you subtract those forces from the total. Net Force net force, motion, add, opposite, acceleration,

4. Finding the net force allows you to predict how the ________________ of an object will change. net force, motion, add, opposite, acceleration, Opposite

5. Ball A – 5kg Ball B – 10kg Ball C – 15kg Ball D – 20kg The balls above were all laid on a level table side by side. Which of the balls would have the greatest amount of inertia? A I B II C III D IV MOTION

6. Ball D A skateboarder skates down a 12 meter ramp in 1.5 seconds. How fast is the skateboarder moving?

7. Mr. Scopes’ class is playing tug-of-war against Mrs. Dominguez’s class. Mr.Scopes’ class is exerting 120N of force. Mrs. Dominguez’s class is exerting 125N of force. What is their net force? A. 0N; there is no motion B. 5N; in the direction of Mrs. Dominguez’s class C. 5N; in the direction of Mr. Scopes’ class D. None of the above. 8

8. A race car driver completes a 250 mile race in about 2 hours. What was the driver’s average speed in mph? A. 250 mph B. 500 mph C. 125 mph D. 1.25 mph B

9. All of these pictures show unbalanced forces except C

10. What is the mass of a truck if it produces a force of 4200N while accelerating at a rate of 7 m/s2? A

11. The track is 75 m long. If it takes a person 15 seconds to run its length, how fast were they running? 600 kg

12. 5 m/s

13. 50 N

14. C. 20g

15. Which of the following is not an example of acceleration? i.When a car turns left ii.When a train speeds up iii.When a runner slows down iv.When a dog is sitting Double the acceleration

16. Are the forces acting on the object balanced or unbalanced? iv. When a dog is sitting

17. Lance Armstrong rides a bicycle in the Tour de France for 120 miles for 6 hours. What is his speed? Balanced

18. 20 mi/h A car is traveling from Houston to Miami. The trip is 1440 kilometers and takes 12 hours. What is the velocity?

19. 120 km/h East A street racer speeds up from 0 m/s to 20 m/s in 5seconds. What is their acceleration?

20. 4 m/s 2 A mover moves a couch that has a mass of 500 kilograms at an acceleration of 2 m/s 2. How much force is being placed on the couch?

21. 1000 Newtons A football player pushes another player with 50 Newtons of force for 5 meters. How much work is the football player doing?

22. 250 N/m An elephant has a mass of 3500 kilograms and is being pulled by gravity at 9.8 m/s 2. What is the elephant’s force?

23. 34,300 kg m/s 2 Cars collide at an intersection. One car is coming from the right at 1000 Newtons of force. The other is traveling from the left with 1200 Newtons of force. What is the net force?

24. 200 N  Which of Newton’s Laws does this picture represent? TAKS REVIEW CIRCUIT #1-50

25. Newton’s 3 rd law: Action-Reaction TAKS REVIEW CIRCUIT #1-50 The graph shows the movement of a car over time. What is the car’s average speed?

26. 15 km/hr Ability of an object to resist change of motion. TAKS REVIEW CIRCUIT #1-50

27. INTERIA A person biking 12 mi/hr northwest represents speed, velocity, or acceleration?

28. answers Velocity Add Net Force Opposite MOTION Ball D 8 B C A 600 kg 5 m/s 50N C. 20 kg Double the acceleration iv. when a dog is sitting Balanced 20 mi/h 120 km hr east 4 m/s 1000 n 250 n/m 34, 300 kg m/s 200 N  Newton’s 3 rd Law action reaction 15 km/hr Interia