Which of the following must an engineer take into account when designing a roller coaster? the mass of the roller coaster
the rates at which the roller coaster will change directions
the total mass of the people that will ride the roller coaster
the acceleration of the roller coaster due to gravity

Explanation:

All of the above.

Certainly a coaster could be designed without considering any one item of mass, gravity, or rates of direction change, but the success of the ride would be highly suspect.

Ignoring mass (of cars and/or riders) could lead to support members not being strong enough.

Ignoring rates of change of direction could lead to support members not being strong enough or make the forces on the riders uncomfortable.

Ignoring gravity could lead to support members not being strong enough or make the forces on the riders uncomfortable.

it would be c. predictability

answercollision;