phys science

1. speed is the ratio of the distance an object moves to
a. the amount of time needed to travel the distance**
b. the direction the object moves
c. the displacement of an object
d. the motion of the object

2. a car traveled 60 km in 2 hours, 84 km in the next 1 hour, and then 68 km in 2 hours before reaching its destination. what is the cars average speed rounded to the nearest whole number?
a. 212 km/hr
b. 42 km/hr
c. 148 km/hr**
d. 1,060 km/hr

3. the slope of the line on a distance time graph is
a. distance
b. time
c. speed**
d. displacement

4. what is the speed of a bobsled whose distance time graph indicates that it traveled 100 m in 25 s?
a. 4 m/s
b. 2,500 m/s
c. 0.25 mph
d. 100 m/s**

5. a river current has a velocity of 5 km/h relative to the shore and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?
a. by subtracting the river current vector from the boat's velocity vector
b. by dividing the river current vector by the boat's velocity vector**
c. by multiplying the vectors
d. by adding the vectors

please check my answers, thanks :))

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  1. I am not an expert at maths but I am quite sure that speed is the motion/movement of the object and how fast something is travelling.

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  2. Oops. Is this science? It looked like maths to me. Sorry.

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  3. 1. yes
    2. No 42.4
    3. yes
    4.100m/25s = 4 m/s
    5. 5+5 = 10 Imagine being on boat and looking at flagpole on land.

    An - please. It does not help to confuse people.

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  4. "an" will be banned if she keeps this up.

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    👩‍🏫
    Writeacher
  5. thank you so much Damon you were right :)
    an thanks for trying to help

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  6. please forgive me Vanessa.

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  7. A
    B
    C
    A
    D

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  8. The anonymous dude is 100% correct

    (IF ANSWERS ARE SWAPPED INTO DIFFERENT POSITIONS HERE YOU GO)
    1. The amount of time needed to travel the distance.

    2. 42 km/hr.

    3. Speed.

    4. 4m/s

    5. By adding the vectors.

    All credit goes to the Anonymous dude.

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  9. 1. A
    2. B
    3. C
    4. A
    5. D

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  10. 100%^

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  11. the anonymous is right and NoName clarified it perfectly still right thanks homies!!!

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  12. D
    A
    C
    B
    B
    D
    D

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