Bill notes that his prediction is significantly higher than his calculated velocity. which error explains this difference?
a)
bill forgot to account for friction.
bill got to zero the balance and found a weight for the marble that was
too low
bill weighed the marble in a weighing dish and failed to account for the
mass of the weighing dish.
d)
bill didn't position the photogate correctly and got the time required for
the top of the marble to pass through, rather than reach the middle.