Answer:


Explanation:
The statement is described physically by means of the Principle of Momentum Conservation. Let assume that first person moves in the positive direction:
First Person

Second Person

The final velocities of the two people after the snowball is exchanged is:


The correct ans is 1.
A changing electric field produces a changing magnetic field which in turn produces a changing electric field. This means that the source has created a changing electric and magnetic fields, perpendicular to each other, that travel away from the source. Electric field, magnetic field and the EM wave are perpendicular to each other. This gives electromagnetic waves their transverse nature.
1) 5 s
The vertical position of the object is given by

where
h=400 ft represents the initial height
g = 32 ft/s^2 is the acceleration of gravity
t is the time
We want to find the time t at which the object reaches the ground, so the time t at which
y(t) = 0
By substituting this into the equation, we find

2) 160 ft/s
The object is released from rest, so the initial velocity is zero
u = 0
The final vertical velocity can be found by using

where
v is the final velocity
a = 32 ft/s^2 is the acceleration of gravity
h = 400 ft is the vertical distance covered
Solving for v, we find
