2. An outdoor speed-skating track is shaped like an ellipse with the equation shown. A skater travels around the track with a constant speed of 12 m/s. TOP VIEW Y equation of the track x2 y² + (50)² (100) ² X = 1 a. At what two (x,y) coordinates will the acceleration of the skater be a maximum? b. What is the radius of curvature of the track at those two points? c. What is the normal component of acceleration at those two points?

1. In a nonuniform circular motion, what is the direction of the tangential acceleration if the moving particle has increasing velocity? a. Opposite with radial acceleration b. Same with instantaneous velocity c. Opposite with instantaneous velocity d. Same with radial acceleration2. A roller coaster car moves with varying speed in a vertical loop. Assume that the loop is circular. At what point does the roller coaster car has decreasing velocity? (Refer to the photo)

A toy racecar races along a circular race track that has a radius of 19 meters. The racecar starts at the 3-o'clock position of the track and travels in the CCW direction. Suppose the car has swept out 2.25 radians since it started moving. a. The racecar is how many radius lengths to the right of the center of the race track? radius lengths Preview b. The racecar is how many meters to the right of the center of the race track? meters Preview c. The racecar is how many radias lengths above the center of the race track? radius lengths Preview d. The racecar is how many meters above the center of the race track? meterss Preview

A toy racecar races along a circular race track that has a radius of 26 meters. The racecar starts at the 3-o'clock position of the track and travels in the CCW direction. Suppose the car has swept out 2.05 radians since it started moving. The racecar is how many radius lengths to the right of the center of the race track?  radius lengths    The racecar is how many meters to the right of the center of the race track?  meters    The racecar is how many radius lengths above the center of the race track?  radius lengths    The racecar is how many meters above the center of the race track?

1. Refer to figure 1. A spherical shell and solid sphere roll down a ramp with a 30.0° inclination. Calculate the final velocities of each sphere when they reach the bottom and the velocity of each sphere ½ the distance above the ground. 20.0m Solid sphere, about diameter Spherical shell, about diameter R MR² MR²

Part A How many revolutions per minute would a 30 m -diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point? Express your answer using two significant figures. ΑΣφ ? f = 5.6 rpm Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining

When the car's speed is 4 m/ s, find the acceleration a ) normal to the radius, b) along to the radius, and c) the magnitude and direction of the total acceleration.

Circle. In a carnival ride, the passengers travel at a constant speed in a circle of radius 5.0 [m]. They make one complete revolution in 8.0 [s]. What is the magnitude of their acceleration? O A. 3.1 [m/s²] O B. 7.9 [m/s²] O C. 4.0 [m/s²] O D. 12 [m/s²] Inertial. Which of the following closely resembles an inertial reference frame? O A. A desk at rest in a sturdy building. OB. A boat out in the stormy sea. OC. A jeepney passing through a road hump. O D. A car turning around a corner.

8 At t = 0 a grinding wheel has an angular velocity of 30.0 rad/s. It has a constant angular acceleration of 35.0 rad/s² until a circuit breaker trips at time t = 1.70 s. From then on, it turns. through an angle 438 rad as it coasts to a stop at constant angular acceleration. Through what total angle did the wheel turn between t = 0 and the time it stopped? Express your answer in radians. 15| ΑΣΦΑ 0= Submit Part B Request Answer At what time did it stop? Express your answer in seconds. t= VG ΑΣΦ 1 → C redo C BI ? ? rad S

60° 30° Figure 1: Vector Addition Diagram Show step-by-step step solution. 1. Which of the following formulas will give you the magnitude of C? A. JA*|cos60 B. JA]sin60 C. |B|cos60 D. [B|sin60 2. Which of the following equations is TRUE? A. A+B =C B. B+ A = C* C. B+ C* = A* D. A+ C =B* %3D 1< 10