What is the magnitude of the tangential acceleration of a bug on the rim of a 10.5-in.-diameter disk if the disk accelerates uniformly from rest to an angular speed of 80.0 rev/min in 3.50 s? m/s2 (b) when the disk is at its final speed, what is the magnitude of the tangential velocity of the bug? m/s (c) one second after the bug starts from rest, what is the magnitude of its tangential acceleration? m/s2 (d) one second after the bug starts from rest, what is the magnitude of its centripetal acceleration? m/s2 (e) one second after the bug starts from rest, what is its total acceleration? (take the positive direction to be in the direction of motion.) magnitude m/s2 direction ° from the radially inward direction