Mari099idn
Answered

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1. if a car travels 320 kilometers for 3.5hours what is its average speed in km/hr and in m/s?
2. a truck accerlerates on a highway from to 60km/h in 10.0seconds.what is the magnitude of its average acceleration in m/s2?
3. the velocity of a car increases from 3m/s at 1.0 to 20m/s at 4.5 what is the car's average accerleration​

Sagot :

Arghamitraidn

Answer:

1. 91. 428571428571 kmph.

2. Insufficient Info

3. 4. 8571428571428 m/s^2

Explanation:

1. Velocity= Distance/Time

i.e.

[tex]v = \frac{x}{t} [/tex]

[tex]v = \frac{320}{3.5} [/tex]

[tex]v = 91. 428571428571[/tex]

2. Final Velocity required. Insufficient Data.

3. Acceleration= (Final Velocity - Initial Velocity)/Time Interval.

i.e

[tex]a = \frac{v - u}{t2 - t1} [/tex]

Here,

V= 20 m/s | u= 3 m/s | t2= 4.5 | t1= 1.0

That means,

[tex]a = \frac{20 - 3}{4.5 - 1} [/tex]

[tex]a = \frac{17}{3.5} [/tex]

[tex]a = 4. 8571428571428[/tex]

That means, Acceleration is 4. 8571428571428 m/s^2.

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