car is traveling at a constant speed of 30 km/hr in a circle of radius 200m. Which of the following is true about the acceleration of the car?   a) there is acceleration due to changing veloocity b) it is zero since the velocity is constant c) it is zero since the speed is constant d) the acceleration is negligible due to the radius of the circle

Consider a car moving on a circular track with constant speed. Which of the following statements is incorrect?  a) The distance to the center of the circle does not vary  b) The vehicle retains the magnitude of its speed  c) The vehicle has no acceleration d) The vehicle has acceleration, but its speed is constant  e) Centrifugal acceleration is zero

Question #4

Current Attempt in Progress An astronaut is rotated in a horizontal centrifuge at a radius of 3.90 m. (a) What is the astronaut's speed if the centripetal acceleration has a magnitude of 7.50g? (b) How many revolutions per minute are required to produce this acceleration? (c) What is the period of the motion? (a) Number i Units (b) Number i Units (c) Number i Units