Stopping on snow and ice may require up to ten times
the distance than normal conditions.
In normal conditions you can drive easily, but when
there is snow, ice, fog, rain, it is difficult to drive. Some people thought a
stopping distance was twice as in normal condition but it can increase up to
ten times in snow and ice.
Mario's velocity vector relative to the ice is

(note that all velocities mentioned here are given in m/s)
The puck is moving in a direction of 17.8 degrees west of south, or 252.2 degrees counterclockwise relative to east. Its velocity vector relative to the ice is then

The velocity of the puch relative to Mario is


Then, relative to Mario,
a. the puck is traveling at a speed of
, and
b. is moving in a direction
such that

which is about
west of south.
To find the relative distance from one point to another it is necessary to apply the Relativity equations.
Under the concept of relativity the distance measured from a spatial object is given by the equation

Where
= Relative length
v = Velocity of the spaceship
c = Speed of light
Replacing with our values we have that




Therefore the distance between Mars and Venus measured by the Martin is 
Answer:
Explanation:
To solve this equation ,we need to apply Newton's second law. Which defines
Force = Mass* Acceleration
Mass = 0.5 g = 0.5*10^-3 Kg
Force = 20 N
Acceleration = Force / Mass
Acceleration = 20 N /0.5*10^-3 Kg
Acceleration = 40000 m/s^2
I believe you meant a mass of 0.5 Kg
In that case, the acceleration would be
Acceleration = 40 m/s^2
Option C
The answer to your question is b. Particles