Question

question 6 (1 point)
consider the coaster
track below and
assume that track
drag is turned off.

the speed of the roller
coaster car at location
x will be the same as
the speed that it has at
location ______.

a a
b b
c c
d d
e e

Explanation:

Step1: Recall energy conservation

With drag off, mechanical energy (KE+PE) is conserved. Speed depends on KE, so same height means same PE, hence same KE/speed.

Step2: Compare heights of X and options

Check graph: Location X and location A are at the same vertical height.

Answer:

a. A