Answer:
(a) 1.73 s
(b) 14.75 m
(c) 3.36 s
(d) double
(e) 63.32 m
Explanation:
Vertical component of initial velocity, uy = 17 m/s
Horizontal component of initial velocity, ux = 18.3 m/s
(A) At highest point of trajectory, the vertical component of velocity is zero. Let the time taken is t.
Use first equation of motion in vertical direction
vy = uy - gt
0 = 17 - 9.8 t
t = 1.73 seconds
(B) Let the highest point is at height h.
Use III equation of motion in vertical direction
0 = 17 x 17 - 2 x 9.8 x h
h = 14.75 m
(C) The time taken by the ball to return to original level is T.
Use second equation of motion i vertical direction.
h = 0 , u = 17 m/s
0 = 17 t - 0.5 x 9.8 t^2
t = 3.46 second
(D) It is the double of time calculated in part A
(E) Horizontal distance = horizontal velocity x total time
d = 18.3 x 3.46 = 63.32 m
I’m unsure whether there is a question there but in forces the force weight which includes gravity would be pushing the diver directly down. However if there was enough thrust from the diver the motion would change but ultimately will be accelerating downwards because of unbalanced forces
Answer: The crust of the Earth has some permanent magnetization, and the Earth's core generates its own magnetic field, sustaining the main part of the field we measure at the surface. So we could say that the Earth is, therefore, a "magnet."
Explanation:
Answer: A. It consists of cranial and spinal nerves that spread throughout the body.
Explanation:
The peripheral nervous system (PNS) is made up of all nerves outside the central nervous system (CNS); includes all the cranial nerves that carry impulses to and from the brain and all the spinal nerves that carry messages to and from the spinal cord. This includes long nerve fibers as well as ganglia made of neural cell bodies. <em>The peripheral nervous system connects the central nervous system (CNS) to various parts of the body.</em>
The part of the body that constitutes the upper and lower extremities of the body along with the shoulder and pelvic girdles is the <em>appendicular skeleton.</em>
The part of the body that supports, protects, and allows bodily movement is <em>the skeleton</em><em>. </em><em>The skeleton</em> also provides the shape and form of the human body.