Answer:
28 J
Explanation:
Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. In other words, it is energy in an object due to its motion or position, or both.
In physics, mechanical energy (Emech) is the energy associated with the motion and position of an object usually in some force field.
Therefore:
ME = KE + PE = 25 + 3 = 28 J
Answer:
Explanation:
Given
acceleration of rocket(a)
At h=1000 m rocket burn out
(b) time to reach v=100 m/s
v=u+at
(c)Rocket maximum altitude
here u=100 m/s
v=0
[tex]s=510.204
Therefore maximum altitude=510.204+1000=1510.204 m
Answer:
When the velocity is set to a constant value, the displacement increases with time but the acceleration remains zero
Explanation:
plato
Opposites attract so north goes to south and Vice versa. When the same poles are facing each other they push away when they are opposites they attract.
If the lens in a person's eye is too highly curved, this person is suffering from: nearsightedness.
lens is a piece of transparent material (such as glass) that has two opposite regular surfaces either both curved or one curved and the other plane and that is used either singly or combined in an optical instrument for forming an image by focusing rays of light.
The lens is used to form an image of an object by focusing rays of light from the object.
Various types of lenses are :
- Concave lens.
- Convex lens.
- Plano lens.
learn more about lens here
brainly.com/question/9757866
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