Question

The first hill of a roller coaster is 42 meters high. The top of the second hill of the one

Answer 1

Answer:

Explanation:

The first hill of a roller coaster is 42 meters high. The top of the second hill of the roller coaster is 33 meters high. The mass of the roller coaster is 34,500 kg

Answer 2

Answer:

Part a)

Speed of the roller coaster is

$v = 13.3 m/s$

Part b)

Since it is moving with non zero speed at some height above the ground

So we will have

Kinetic energy + Potential energy Both

Explanation:

As we know that there is no friction on the path

So here we can use mechanical energy conservation law

so we will have

Part a)

$U_i + K_i = U_f + K_f$

$mgh + 0 = \frac{1}{2}mv^2 + mgH$

$34500(9.81)(42) = \frac{1}{2}(34500)v^2 + 34500(9.81)(33)$

$v = 13.3 m/s$

Part b)

Since it is moving with non zero speed at some height above the ground

So we will have

Kinetic energy + Potential energy Both