Question

A golf ball is hit off a tee at the edge of a cliff. Its x and y coordinates as functions of time are given by the following expressions. x- (20.0 m/s)t y (5.20 m/s)r-(4.90 m/s2)r2 (a) Write a vector expression for the ball's position as a function of time, using the unit vectors i and j. (Use the following as necessary: t.) (b) By taking derivatlves, obtain an expression for the velocity vector v as a function of time m's) j (c) By taking derivatives, obtain an expression for the acceleration vector a as a function of time. m/s2) j (d) Next use unit vector notation to write an expression for the position of the golf ball at t4.60 s. (4.60 s)- e) Write an expression for the velocity at this time v(4.60 s) = ( (f) Write an expression for the acceleration at this tine. a(4.60 s)- m)i m/s)i+m/s) j m/s2) j m ) j

Answer 1