Answer:
So, horizontal Velocity is 699.30 m/s
Explanation:
First, we need to determine the time as follow
y = ( U x t ) + 1/2 x ( g x 
)
Where
y = Vertical distance = 10 cm / 1000 = 0.1 m
u = vertical velocity = 0
g = gravity = 9.8
Placing values in the formula
0.1 = ( 0 x t ) + 1/2 x ( 9.8 x )
0.1 = 0 + 4.9
0.1 = 4.9
= 
t = 0.143 seconds
Use the following formula to calculate the horizontal velocity
V = x / t
Where
x = Distance = 100 m
t = time = 0.143 seconds
V = 100m / 0.143 seconds
V = 699.30 m/s
Answer:
(A)
Explanation:
We know , electric potential energy between two charge particles of charges "q" and "Q" respectively is given by kqQ/r where r is the distance between them.
Since the two charged particles are moving apart, the distance between them (r) increases and thus electrical potential energy decreases.
Answer:
<em>6.8 Kg m/s</em>
Explanation:
<u>Linear Momentum</u>
The linear momentum is defined as the product of the velocity of an object by its mass
P=mv
It's a vectorial magnitude, but if we use its equivalent scalar equation, then v is the speed
The measured speed of a pitch by Aroldis Chapman is v=47 m/s. The ball has a mass of m=145 gram=0.145 Kg. The maximum momentum of the ball was
P=(0.145 Kg)(47 m/s)=6.8 Kg m/s
The options don't show the units of the momentum, but we assumed to be Kg m/s, so the correct option is the third one
C. air has mass
all matter has mass
