Answer:
Rotational inertia of the object is given as
Explanation:
As we know that the acceleration of the object on inclined plane is given as
now we know that velocity at any instant of time is given as
now we know that if the graph between velocity and time is given then the slope of the graph will be same as acceleration
so here we have
now from the graph slope of the graph is given as
now rotational inertia is given as
348.34 m/s. When Superman reaches the train, his final velocity will be 348.34 m/s.
To solve this problem, we are going to use the kinematics equations for constant aceleration. The key for this problem are the equations and
where
is distance,
is the initial velocity,
is the final velocity,
is time, and
is aceleration.
Superman's initial velocity is , and he will have to cover a distance d = 850m in a time t = 4.22s. Since we know
,
and
, we have to find the aceleration
in order to find
.
From the equation we have to clear
, getting the equation as follows:
.
Substituting the values:
To find we use the equation
.
Substituting the values: