Answer:
Time = 0.86 s
Horizontal distance = 3.03 m
Explanation:
Given data:
initial velocity = 
= 3.8 m/s
θ = 22° below with horizontal
Height = h = 4.9 m
a.) Time = t = ?
b.) Horizontal distance = R = ?
a.) First we need to find time of flight
Resolve Velocity into horizontal and vertical component
Horizontal component = 
= Cosθ
= 3.8Cos22°
= 3.52 m/s
Vertical component = 
= Sinθ
= 3.8Sin22°
= 1.42 m/s
Using 2nd equation of motion
4.9 = 1.42t + 4.9t²
the above equation is quadratic. So it has 2 outputs. By solving above equation we have two outputs that is
t = 0.86 s & t = -1.15 s
Time can never be negative ,So the correct answer is t = 0.86 s
t = 0.86s
b.)
As the horizontal component of velocity in projectile motion remain constant, so there is no acceleration along horizontal.
we can simply use this formula
R = 
R = (3.52)(0.86)
R = 3.03 m
A fold is a stack of planar surfaces that are bent during permanent deformation and this happens when the earth's crust is compressed together.
<h3>What is a Fault?</h3>
This refers to the planar fracture that occurs in a volume of rock that causes significant displacement.
Hence, we can see that there are three types of fold and they are:
- (1) anticlines,
- (2) synclines
- (3) monoclines.
Please note that your question is incomplete so I gave a general overview of the concept to give you a better understanding.
Read more about faults and folds here:
brainly.com/question/14240712
#SPJ1
Answer:
Workdone =0
Explanation:
The body is inclined at θ=30°, s=10m, m=5kg
Workdone by the object = FsCosθ
but the surface is a friction-less surface, this means coefficient of friction =0
F=μR
F=0*R
F=0
W=FScosθ
W=0*SCosθ
W=0
Answer:
c) those caused by parasites
I believe it would best represent Newton’s first law; an object tends to stay at rest and an object tends to stay in motion unless acted upon by an unbalanced force. When the dog stops walking, the doll will continue to go forward because there is no unbalanced force acting in it.
