Question

A gymnast falls from a trapeze while doing a stunt. Assuming she is in free fall, how far will she have fallen in 0.3 seconds?

A. 1.5 m
B. 0.6 m
C. 0.4 m
D. 0.9 m

Answer 1

Here you can use s=ut+1/2at^2

Answer 2

distance = (initial velocity)(time) -(1/2) (9.8 m/s^2) (time)^2

Answer 3

My answer was not d.

Answer 4

My bad its c calculation error. And @douglaswinslowcooper it is + instead of - in your equation since free fall is in direction of gravity so acceleration is positive as it is along displacement.

Answer 5

Arbitrary whether we consider the direction of gravity negative or positive here. Would make a difference, however, if we had a non-zero initial velocity.

Answer 6

Yes but still since we are dealing with vectors its safer to stick to the notations :P