You are a bus driver .20 people get on , 12 people get off , 3 more get on 5 people get off with 20 more getting on . what "s the bus driver name ? you never said that
I don't know
none of the above

Ateacher attaches a ball to a meter long string and whirls it around in a horizontal circle at constant speed. the teacher explains that the string is what makes the ball go in a circle. why is the string necessary? a) the string is needed to apply a torque to the ball. b) the string is needed to push on the ball to get it up to speed. c) circle motion requires an inertia which is provided by the string. d) circle motion requires a force to give it a centripetal acceleratio