The radii and times needed to complete one
rotation for the lour planets
closest to the sun are given
at the right
a. Find the linear velocity of
a point on each planet's
equator.
b. Compare the linear
velocity of a polnt on the
equator of Mars with a
point on the equator of
Earth.

for the points

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0