(a) 1.67 m/s
For the purpose of the problem, we can consider the two coupled railroad cars has a single car, having a total mass of
Initially moving at
v1 = 1.20 m/s
The first car instead has mass
and velocity
v2 = 2.60 m/s
The law of conservation of momentum states that the total initial momentum of the system must be equal to the total momentum after the collision. So we can write
where v is the velocity at which the three cars move together after the collision.
Solving the equation for v, we find:
(b)
The kinetic energy is given by
where m is the mass of the object and v is the speed.
The total kinetic energy before the collision is
While the total kinetic energy after the collision is
So the kinetic energy lost is
Answer:
10.55111 m/s²
Explanation:
M = Mass of Saturn =
r = Radius of Saturn =
G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²
Acceleration due to gravity is given by
The acceleration due to gravity on Saturn is 10.55111 m/s²