Acar movingin a straight line starts at x = 0 at t = 0. it passes the point x = 25.0 m with a speed of 11.0 at t = 3.00s. it passes the point x = 385m with a speed of 45.0 m/s at t = 20.0 s. find (a) the average velocity, and (b) the average acceleration, between t = 3.00 s and t = 20.0 s.

Part a)

at t = 3.00 s

at t = 20.0 s

Part b)

at t = 3.00 s

at t = 20.0 s

Explanation:

The car starts at x = 0

Part a)

Now at t = 3.00 s

the position of the car is given as x = 25 m and its speed is given as v = 11 m/s

Now for average velocity we have

Now for average acceleration we have

Part b)

Now at t = 20.0 s

the position of the car is given as x = 385 m and its speed is given as v = 45 m/s

Now for average velocity we have

Now for average acceleration we have

the entire statement is true and correct.  

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