UNIT 1: Force & Motion

UNIT 1: Forces & Motion Study Guide 

Motion 

1. Define & include equation: 

   • Distance:  

   • Speed: 

   • Velocity

   • Acceleration: 

2. What is the speed of an object at rest? 

3. The difference between speed and velocity is that velocity includes _______. 

4. The SI unit for distance is ________.

5. The SI unit for speed or velocity is _______. 

6. The SI unit for acceleration is __________.
   
   

Forces:

7. Describe: 

   • Newton’s First law of Motion/Law of Inertia:  

   • Newton’s Second law of Motion/ Law of Acceleration:  

   • Newton’s Third law of Motion/Law of Action-Reaction: 

8. Give an example for each of Newton’s laws:

   • Newton’s First law of Motion:  

   • Newton’s Second law of Motion:

   • Newton’s Third law of Motion:  

7. Define and give an example of each of the following terms.

   • Inertia:

   • Friction:

   • Applied Force:

   • Net Force:

8. Can an object accelerate if there are no net forces? 

9. Can an object be moving with no net force? Why or why not?

10. If forces are unbalanced, is there acceleration? 

11. The combination of all of the forces acting on an object is called the _________.

12.  If the net force acting on a stationary object is zero, then the object will ________________. 

13. A car on cruise control is an example of (balanced/unbalanced) forces. 

14. The law that states that every object maintains constant velocity unless acted on by an unbalanced force is ______________________. 

15. The law states that for every action force there is an equal and opposite reaction force ___________________. 

16. The law that states that the unbalanced force acting on an object equals the object’s mass times its acceleration is ______________________.

17. What is the SI unit for force? 

Practice Caluclations

7. What is the velocity of a missile that travels north 8000 meters in 10.12 seconds?

8. What distance does a rocket flying for 5 seconds at 100 m/s travel?

9. In 5 seconds, a car goes from 0 m/s to 60 m/s. What is the acceleration of the car?

10. A car's engine produces a force of 1500 N and it accelerates at 2.5 m/s2.  What is its mass?

11. You throw a 0.5 kg ball with a force of 15 N.  What is the ball’s acceleration?

12. A 15 kg ball accelerates at 20 m/s2 what force was exerted on the ball?

13. How much force is required to accelerate a 2 kg rock at 3 m/s2?

14. A horse ran 500 meters down the hill in 50 seconds.  What is the velocity of the horse?

15. Sally drove at a speed of 50 km/hr. south for 2 hours.  How far did she travel?

16. A hiker walked a 5 kilometer trail in 65 minutes.  What was his speed?