I need solve this assignment

Current Attempt in Progress Q2 A proton initially has U = (-1.40 )7 + (10.0)7 + (5.90 ) and then 8.00 s later has 7 = (14.0)i + (10.0)7 + (-13.0) k (in meters per second). (a) For that 8.00 s, what is the proton's average acceleration a avg in unit vector notation, (b) in magnitude, and (c) the angle between a avg and the positive direction of the x axis? (a) Number i i+ k Units (b) Number i Units (c) Number i Units Your answer is partially correct. Q9 A woman rides a carnival Ferris wheel at radius 24 m, completing 4.7 turns about its horizontal axis every minute. What are (a) the period of the motion, and the magnitude of her centripetal acceleration at (b) the highest point and (c) the lowest point? (a) Number 12.76 Units S (b) Number i 11.81 Units m/5^ 2 (c) Number 5.81 Units m/s* 2 Current Attempt in Progress Q10 When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of about 24.0 km (about the size of a typical city). If a neutron star rotates once every 0.770 seconds, (a) what is the speed of a particle on the star's equator and (b) what is the magnitude of the particle's centripetal acceleration? (c) If the neutron star rotates faster, do the answers to (a) and (b) increase, decrease, or remain the same? (a) Number i 1.96x10^5 ! Units (b) Number i 1.6x10^6 ! Units m/s^ 2 C (c) increase