need help

2. [12 Points ] DETAIIS SERPSE7 4.P. 002. MY NOTES ASK YOUA TEACHER PRACTICE ANOTHER x(1),0m/s)tx=(100m/s)r(4.00m/s2)r2 O 9 0 r=1 mi i+i m+1 v=1 mis)+i+( m/s)I (d) Br taking derivatives, obdain an expression for the acceleration vector a an a function of time. (Uve the following as necessary t) (e) Next use unit vector actation to wite an expressian for the position of the golf ball at t=2.60s : r(2.60s)(m)i+(m)i (1) Write an exodstion for the velocity at thin tine. (9) Write an expression for the acceleratoen at this time: a(2.60s)=(m/s2)1+(m/s2))