A commuter backs her car out of her garage with a constant acceleration of 1.40 m/sz. (For each answer, enter a number.) (a) How long in seconds does it take her to reach a speed of 1.90 m/s? :15 (b) If she then brakes to a stop in 0.8 5, what is her (constant) deceleration in m/sz? :] we A helicopter blade spins at exactly 95 revolutions per minute. Its tip is 5.50 rn from the center of rotation. (For each answer, enter a number.) (a) Calculate the average speed (in m/s) of the blade tip in the helicopter's frame of reference. E m (b) What is its average velocity (in m/s) over one revolution? E m A student drove to the university from her home and noted that the odometer reading of her car increased by 13.0 km. The trip took 18.0 min. (For each answer, enter a number.) (a) What was her average speed in km/h? :W. (b) If the straightline distance from her home to the university is 10.3 km in a direction 25.0 south of east, what was her average velocity in km/h? Em (C) If she returned home by the same path 7 h 30 min after she left, what were her average speed and veiocity in krn/h for the entire trip? average speed :1 km/h average velocity :] km/h A plane lands on a runway with a speed of 115 m/s, moving east, and it slows to a stop in 11.0 5. What is the magnitude (in m/sZJ and direction of the plane's average acceleration during this time interval? magnitude (Enter a number.) :1 m2 direction 0 d ue west 0 due east A cheetah can accelerate from rest to a speed of 22.0 m/s in 4.75 5. What is its acceleration (in m/sz)? (Enter a number.) Ewe