Answer: Forces and Motion Unit Test (Connexus)
1. A. 3 km north
2.B. The airplane
3. C. at a particular instant
4. D. all of the above
5. C. the front seat of the car
6. C. inertia
7. C. one-third its weight on Earth's surface
8.D. gravity
9.D. all of the above
10. C. Pascal's principle
11.D. The weight of the balloon is less than the weight of the air displaced by the balloon
12.C. fluid displaced by the object
13. displacement
14.vector addition
15. positive
16 projectile
17. force,mass
18. increases
19.equally
These are the answers I put for the typed out Essay's
20. Speed is the distance traveled by an object where as, velocity is distance traveled by an object per unit time in a particular direction. Speed is a scaler quantity where as velocity is a vector quantity.
21. Acceleration is the rate of change, which means the change in velocity (vf-vi) with time(t) Where vf if the final velocity and vi is the initial velocity
22. Acceleration can be described as changes in speed, direction or both. The ball is moving at a constant speed, but its direction is changing continuously Because it's direction is changing, the ball is experiencing continuous acceleration.
23. For graph A, I can say that velocity is constant until it reaches time of 8 seconds and a constant velocity is again exhibited starting at time 12 seconds
24. For Graph B, the velocity is changing as time pass by since the slope is changing, At time of 2 seconds, graph A has greater velocity since it has a steeper slope.
25. 300 meters
26. Graph A shows greater velocity because Graph A has a steeper slope than Graph B.
27. 38 kg * 2.2 m/s=83.6 kg-m/s
28. The pressure inside the tube is greater than the pressure outside the tube because primarily of the smaller area of the tube. This increases up the pressure and let the fluid rise up.
29. The fertilizer is pushed up the tube.
Explanation: I hope this helps :)
