1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pavlova-9 [17]
3 years ago
5

How do you do this problem?

Physics
1 answer:
kvasek [131]3 years ago
5 0

Explanation:

First, find the velocity of the projectile needed to reach a height h when fired straight up.

Given:

Δy = h

v = 0

a = -g

Find: v₀

v² = v₀² + 2aΔy

(0)² = v₀² + 2(-g)(h)

v₀ = √(2gh)

Now find the height reached if the projectile is launched at a 45° angle.

Given:

v₀ = √(2gh) sin 45° = √(2gh) / √2 = √(gh)

v = 0

a = -g

Find: Δy

v² = v₀² + 2aΔy

(0)² = √(gh)² + 2(-g)Δy

2gΔy = gh

Δy = h/2

You might be interested in
food does not pass through the liver or the pancreas why are these organs dtill important parts of the digestive system?
kirill115 [55]

Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Liver. Your liver makes a digestive juice called bile that helps digest fats and some vitamins.

5 0
2 years ago
Why caring a body and moving with it is not a work done<br><br> Why :​
Alecsey [184]

Answer:

Work done on an object is equal to

FDcos(angle).

So, naturally, if you lift a book from the floor on top of the table you do work on it since you are applying a force through a distance.

However, I often see the example of carrying a book through a horizontal distance is not work. The reasoning given is this: The force you apply is in the vertical distance, countering gravity and thus not in the direction of motion.

But surely you must be applying a force (and thus work) in the horizontal direction as the book would stop due to air friction if not for your fingers?

Is applying a force through a distance only work if causes an acceleration? That wouldn't make sense in my mind. If you are dragging a sled through snow, you are still doing work on it, since the force is in the direction of motion. This goes even if velocity is constant due to friction.

Explanation:

8 0
2 years ago
!!!!BRAINLIEST!!!!!
kykrilka [37]

Answer:

The jp2003parker guy is extremely wrong

So he says that the size wont matter and a physical change should occur, but how would the size change without having a physical change occur.

Explanation:

7 0
3 years ago
Read 2 more answers
_ Ba+_O2 =_BaO how do I balance this?
astraxan [27]

Answer:

02-ba=_4

Explanation:

5 0
3 years ago
Define anterior and posterior in correlation to the body. (ANATOMY)
tatyana61 [14]

Answer:

it should be right it's from go.ogle hm!!!

Explanation:

Anterior or ventral - front (example, the kneecap is located on the anterior side of the leg). Posterior or dorsal - back (example, the shoulder blades are located on the posterior side of the body). Medial - toward the midline of the body (example, the middle toe is located at the medial side of the foot).

8 0
3 years ago
Read 2 more answers
Other questions:
  • Calculating the Force of friction
    13·1 answer
  • Provides some background for this problem. a ball is thrown vertically upward, which is the positive direction. a little later i
    11·1 answer
  • When a physical or chemical change occurs, the law of conservation of mass always applies. What happens to the atoms during a ch
    7·2 answers
  • What happens when a dog sleep do they have dreams to ?
    11·1 answer
  • Two tiny conducting spheres are identical and carry charges of -22.0 µC and +46.0 µC. They are separated by a distance of 2.47 c
    5·1 answer
  • Part C
    15·1 answer
  • A car is moving at a velocity of 120 km/h due east, another car is moving at a velocity of 100 km/h due west. How fast are the c
    10·1 answer
  • Which object has the HIGHEST mass?
    12·1 answer
  • When you squeeze one end of an inflated balloon, the other end bulges out.
    13·1 answer
  • 23 and 24 only please help!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!