Help please

A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 6.8 s. (Assume the car travels in the positive direction. Indicate the direction with the sign of your answer.) (a) What is the car's average acceleration? 6.57 m/s2 (b) The same car can come to a complete stop from 25 m/s in 3.7 s. What is its average acceleration? 6.76 * m/s2 Need Help? Read It 7. [-/11.11 Points] DETAILS OBINPHYS8 1.P.020. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A child sits on the edge of a spinning merry-go-round that has a radius of 2.4 m. The child's speed is 3 m/s. What is the child's acceleration? m/s2 radially inward Need Help? Read It