1. [-/1 Points] DETAILS SERPSE10 4.1.OP.002. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An owl dives toward the ground with a constant velocity of 5.15 m/s at 53.0 below the horizontal. The Sun is directly overhead and casts a shadow of the owl directly below it. What is the speed (in m/s) of its shadow on level ground? m/s Need Help? Read It 2. [-/1 Points] DETAILS SERPSE10 4.2.P.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The vector position of a particle varies in time according to the expression r = 6.20 i - 6.40t2 j where r is in meters and t is in seconds. (a) Find an expression for the velocity of the particle as a function of time. (Use any variable or symbol stated above as necessary.) V = m/s (b) Determine the acceleration of the particle as a function of time. (Use any variable or symbol stated above as necessary.) a = m/s2 (c) Calculate the particle's position and velocity at t = 2.00 s. m m/s Need Help? Read It Watch It