In the figure below, a 300 kg roller coaster car is at the top of hill A moving
ID: 1502198 • Letter: I
Question
In the figure below, a 300 kg roller coaster car is at the top of hill A moving with speed vA.
(a) If the roller coaster's initial speed is vA = 5.1 m/s, what will be the roller coaster's speed when it reaches the top of hill B?
(b) If the roller coaster's initial speed is vA = 5.1 m/s, will the roller coaster make it to the top of hill C?
(c) If the roller coaster in part (b) will not make it to the top of hill C, how high will it go before stopping and rolling back down the hill?
(d) What speed, vA, would the roller coaster need to have at the top of hill A to just barely make it to the top of hill C?
Explanation / Answer
A) V^2=U^2+2*g*h = 5.1^2+2*9.8*(10-6)
V=11.98m/s
B)it will not make to hill c
C) here car will suffer deacceleration
0=5.1^2-2*9.8*h
h=1.33m