Kristen performs a backward flip (one revolution) in 0.75 seconds. c.) If the radius of her body about the axis of rotation is 0.65 m, what is her average radial acceleration?

A car on a highway is heading toward a cloverleaf interchange with a circular curvature or Radius=50 m, traveling at a steady speed of 14m/s. A) determine the position and velocity of the vehicle at points A and B. B) determine the vector components and direction of the average acceleration during the trip from a to b. Include a sketch of the vector showing it's orientation. SPeciffy the direction between -180 degrees and 180 degrees as measured from the +x axis.

An airplane flying horizontally at a velocity of 138 m/s and at an altitude of 1500 meters when one of its wheels falls off. a) How long (in seconds) does it take the wheel to reach the ground? b) What horizontal distance (in meters) will the wheel travel before it strikes the ground?

In uniform circular motion, the speed is constant. Although the speed is constant, explain why there is acceleration.    please explain is properly

A helicopter blade spins at exactly 115 revolutions per minute. Its tip is 6.50 m from the center of rotation. (a) Calculate the average speed (in m/s) of the blade tip in the helicopter's frame of reference. m/s (b) What is its average velocity (in m/s) over one revolution? m/s

A scooter, starting from rest, accelerates at 2.72m/s^2 on a circular track with a 205m diameter. What is the elapsed time, in seconds, at which the centripetal acceleration of the scooter has the same magnitude as its tangential acceleration?

When an object is in uniform circular motion, the velocity of the object never changes. True False

A race goes around a circular level track of diameter 1.00 km at a constant speed of 90.0 km/hr. The cars centripetal acceleration in m/s2 is ?

Helicopter blades withstand tremendous stresses. In addition to supporting the weight of the helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the tip. Calculate the centripetal acceleration at the tip of a 4.00 m long helicopter blade that rotates at 5 Hz

An object moving in a circle with a radius of 0.5 meters accelerates tangentially at 5 meters per second squared. At the instant, the object’s net acceleration is 9 meters per second squared, determine its speed.