Question 5 3 pts A point on a circle is moving at a rotational rate of 30 rpm (revolutions per minute) at a distance 75 cm from the center. What is the centripetal acceleration? O ac = 7.4 m/s^2 about 100 m/s^2 O ac = 3.4 m/s^2 O about 220 m/s^2Question 6 3 pts Total acceleration . The total acceleration is the vector sum of angular acceleration, which points to the center of the circle, and tangential acceleration, which is tangent to the circle. Chiotal = Vac + a? A point on a circle is moving at a tangential velocity vt of 16.0 m/s at a distance 65.0 cm from the center. It increased from a tangential speed of 4.00 m/s to 16.0 m/s in 0.100 second. What is the magnitude of the total acceleration aTotal, tangential and centripetal, when it reaches vt = 16.0 m/s? O about 228 m/s^2 O about 217 m/s^2 O about 340 m/s^2 O about 412 m/s^2 O about 366 m/s^2