For the same reason that you can skate around a curve at constant speed but not with constant velocity.
The DIRECTION you're going is part of your velocity, but it's not part of your speed.
If the DIRECTION changes, that's a change of velocity.
The object doesn't have to change speed to have a different velocity. A change of direction is enough to do it.
And any change of velocity is called acceleration.
A possible effect is the risk of Icecaps melted
Answer:
a)
b)
c)
Explanation:
a) The angular velocity is related to the centripetal acceleration by the formula
, which for our purposes we will write as:

Since <em>we want this acceleration to be 1.5 times that due to gravity</em>, for our values we will have:

b) 1 rpm (revolution per minute) is equivalent to an angle of
radians in 60 seconds:

Which means <em>we can use the conversion factor</em>:

So we have (multiplying by the conversion factor, which is 1, not affecting anything but transforming our units):

c) The centripetal force will be given by Newton's 2nd Law F=ma, so on the centripetal direction for our values we have:

B. a solar storm that moves across the sun's surface
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