NOTE: The following question(s) refer(s) to the Cyclone, the famous roller coaster ride at Coney Island, shown in the sketch. Assume no friction.

-Refer to Figure 5-6. How much work was required to bring the 1000-kg roller coaster from point P to rest at point Q at the top of the 50. m peak?
A) 75. kJ
B) 50. kJ
C) 0.49 MJ
D) 32. kJ
E) 0.25 MJ

Question

NOTE: The following question(s) refer(s) to the Cyclone, the famous roller coaster ride at Coney Island, shown in the sketch. Assume no friction.
 
-Refer to Figure 5-6. How much work was required to bring the 1000-kg roller coaster from point P to rest at point Q at the top of the 50. m peak?
A) 75. kJ 
B) 50. kJ 
C) 0.49 MJ 
D) 32. kJ 
E) 0.25 MJ

Quizplus · Accepted Answer

The work required is equal to the change in gravitational potential energy, which is mgh = (1000 kg)(9.8 m/s²)(50 m) = 490,000 J = 0.49 MJ.

NOTE: the Following Question(s) Refer(s) to the Cyclone, the Famous