How many revolutions per minute must a circular, rotating space station of radius 1000 m rotate to produce an artificial gravity of 9.80 m/s²?
0.85 rpm.
0.65 rpm.
0.95 rpm.
0.75 rpm.
Consider a particle moving with constant speed such that its acceleration of constant magnitude is always perpendicular to its velocity.
It is moving in a parabola.
None is definitely true all of the time.
It is moving in a circle.
It is moving in a straight line.
An object moves with a constant speed of 30 m/s on a circular track of radius 150 m. What is the acceleration of the object?
5.0 m/s².
0.17 m/s².
6.0 m/s².
Zero.
