The escape velocity from the planet is 5052 m/s
Explanation:
The formula to calculate the escape velocity from a planet is:

where
is the gravitational constant
M is the mass of the planet
R is the radius of the planet
For Earth,
is the mass
is the radius
Here we have a planet that:
- its mass is 10.8% of that of Earth, so

- its radius is 53% of that of Earth, so

Substituting everything into the first equation, we find the escape velocity from this planet:

#LearnwithBrainly
Answer:
Explanation:
Given
Child falls a height of 
Applying conservation of energy we can write
Loss in Potential energy=Gain in kinetic energy





Thus child reaches a velocity of 4.42 m/s
Answer:
2621.25 meters
Explanation:
First, write down what we are given.
Initial velocity = 27.5 m/s
Final velocity = 42.4 m/s
Time = 75 seconds
We need to look at the kinematic equations and determine which one will be best. In this case, we need an equation with distance. I am going to use
, but you can also use the other equation, 
We need to find acceleration. To find it, we need to use the formula for acceleration:
. Plugging in values, 
Next, plug in what we know into the kinematics equation and solve for distance. 
The body for which its
(Mass) / (radius squared)
is the greatest.
<span>Your answer will be 70,000 kgm/s</span>