Consider a rollercoaster that begins from rest at a height (h) of 200 meters. At one point in the track, the coaster goes around a loop. At the top of the loop, the coaster is moving with a speed of 40 m/s. Calculate the radius of the loop. coaster A. 18.45 m B. 118.45 m C. 98.98 m D. 59.23 m

D. 59.23 m

Explanation:

Given that:

initial height   of the roller coaster = 200m

speed (v) = 40 m/s

use conservation of energy between starting height and top of loop

where

i.e the final height  = 2R

R = radius of the loop

Then

Divide both sides with m; we have :

1962 = 800 + (9.81 )(2R)

1962 -800 = (9.81 )(2R)

1162 = 19.62 R

R = 59.23 m

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.