a car moves in a straight line at 22.0 m/s for 10.0miles, then at 30.0 m/s for another 10.0miles. calculate the car’s average speed in m/s

The average car speed is  25.4 m/s

Explanation:

The definition of average speed is the total distance traveled between the total time

     Vm = dx/dt        (1)

To be able to use this equation let's calculate the total carriage distance

     Xt = X1 + X2

     X1 = 10 miles 1609  m / 1 miles = 16090 m

     X2 = 10 miles 1609 m / 1miles = 16090 m

     XT = 32180 m

Now let's calculate the total time

      v = d / t

      t = d / v

      t1 = x1 / v1

      t2 = x2 / v2

      t1 = 16090/22

      t1 = 731.36 s

      t2 = 16090/30

      t2 = 536.33 s

      t all = t1 + t2

      t all = 731.36 +536.33

      t all = 1267.69 s

Having these values we use the initial equation

      Vm = d / t

      Vm = 32180 /1267.69

      Vm = 25.38 m / s

The average car speed is   25.4 m/s

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table