Questions on motion...your help will be greatly apperciated! thanks so much!?

2007-03-25 2:36 pm
1.) the length between 2 places?

2.)Velocities that have different direction combine by.........?

3.)What is deceleration also known as?

4.)When graphing a distance-time graph for acceleration it is always a ....?

5.)An object in _________ _________is accelerating even though its speed may be constant.

6.)When acceleration is directed toward the center of a circular oath it is called____________ __________.

7.)Why does a train have a large momentum?

8.)Momentim remains_____________ unless an outside object from outside forces acts on the original momentum.

9.)Speed that changed is called...?

回答 (3)

2007-03-25 3:09 pm
✔ 最佳答案
1. distance
2. subtraction
3. decreasing speed. For some authors, they consider it as negative acceleration but for others, it's not, because the negative is just for direction purposes. I prefer decreasing speed
4. parabola, linear graph if it is the distance time graph for velocity
5. circular motion. It is accelerating due to the constant change in direction
6. central acceleration
7. due to its large mass; momentum = mass x velocity
8. constant
9. accelerated speed
參考: teacher
2007-03-25 3:19 pm
1) distance or displacement
2) triangular addition? (question itself has problem)
3) retardation
4) (vague question... not sure if accel is ZERO, UNIFORM, or VARIABLE - resp. ans: straight line, parabola, curve)
5) circular motion
6) centripetal acceleration
7) large mass
8) constant
9) acceleration
2007-03-25 2:42 pm
1. Distance?
2. No idea.
3. Lowering the velocity lol, forgot=p
4. Linear?
5. Free Fall
6. Centripetal Force...or centrifugal (forgot the two.)
7. Extremly heave mass, and velocity.
8. constant?
9. Acceleration?


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