1. A car that is moving in a circle at a constant speed of 30 mi/h is _____. *   a. not accelerating since there is no change in velocity   b. not accelerating despite the fact that there is a change in velocity   c. accelerating since there is a change in velocity   d. accelerating despite the fact there is no change in velocity

If the earth revolves around the sun at a constant distance of 1.50 x 1011 m, what is the centripetal acceleration of the sun if one earth year is 365 days?   a. 4.0 x 10-3 m/s2   b. 3.0 x 10-3 m/s2   c. 6.0 x 10-3 m/s2   d. 5.0 x 10-3 m/s2   e. 2.0 x 10-3 m/s2

A 2.5 kg object is in uniform circular motion with a period of 5 s. If the radius of the path is 2 m, what is the centripetal force on the object? Answer a.7.9 N b.5. 7 N c.9.4 N d.6.8 N e.8.6 N

A. a2=a1/3 B. a2=3a1 C. a2=a1/9 D. a2=a1 E. a2=9a1

Former prince Harry's child is riding on a dangerous, old-fashioned, playground merry-go-round which completes one revolution every 8.36 seconds. The boy is standing 4.65 m from the center of the merry-go-round. What is the magnitude of the centripetal acceleration of the child? a) 3.21 m/s^2 b) 1.78 m/s^2 c) 2.63 m/s^2 d) 2.04 m/s^2 e) 3.97 m/s^2

A 4.0 kg car is traveling around a vertical loop with a radius of 2 m. What is the minimum speed needed for the car to successfully make it around the loop? A.2.0 m/s B.20 m/s C.4.5 m/s D.1.0 m/s

A car with a constant speed of 95 km/h enters a circular flat curve with a radius of 0.5 km. The friction between the road and the car's tire can supply a centripetal acceleration of 1.35 m/s². What is the acceleration the car need to remain in this curve regardless of its acceleration of 1.35 m/s²? a) 2.39 m/s² b) 1.74 m/s² c) 1.35 m/s² d) 1.39 m/s² V₁ = V + at лd²h V= C=d F = ma ac r x=x+(+v₁)t +mgh+Fyud F r

е. f. Ball moving at constant speed in a vertical circle at the end of a string. Ball moving at constant speed in a vertical circle at the end of a string.

Which of the following statements are true. Select all correct answers a. The direction of centripetal acceleration is pointing towards the tangent direction of the circular trajectory b. The direction of centripetal acceleration is pointing towards the center of the circular trajectory c. The tangential velocity is always constant in a circular motion. d. The angular velocity is always constant in a circular motion.

A 0.05 kg golf ball moves in a circle with a radius of 2.3 m at a constant speed of 4 m/s. The centripetal acceleration is m/s². 201²