Answer:
The speed of the shell at launch and 5.4 s after the launch is 13.38 m/s it is moving towards the Earth.
Explanation:
Let u is the initial speed of the launch. Using first equation of motion as :
a=-g
The velocity of the shell at launch and 5.4 s after the launch is given by :
So, the speed of the shell at launch and 5.4 s after the launch is 13.38 m/s it is moving towards the Earth.
Sound waves are transmitted through solids, liquids, and gases. Light waves are transmitted through transparent materials (may be clear or colored material such as filters) that allow most of the light that strikes them to pass through them. Only a small amount of light is reflected or absorbed.
Meteoroid
Streak of light
Reached earth's atmosphere
Explanation:
The celestial object is called a meteoroid because it is a producing a streak of light and has not yet reached the earth's atmosphere.
Meteoroids are called shooting stars due to the beautiful trail of light they leave in their wake.
- A meteoroid is a celestial object that ranges from a few grains to some meters wide.
- They are usually solid. They can be rocky, metallic or both.
- A meteoroid is still in space and has not reached the earth atmosphere.
- Some meteoroids are destroyed when they get to the atmosphere and are called meteors.
- Those that penetrates and reaches the surface are called meteorites.
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Answer:
4.4694 meters per second, 74.4907 kilometers per hour.
Answer: Fill the cup with water
Add a handle to the cup
Lift the cup over the counter.
Explanation:
The options given are:
- Slide the cup away from the edge
- Fill the cup with water
- Turn the cup upside down
- Add a handle to the cup
- Move the cup to the floor
- Lift the cup over the counter
Potential energy refers to the energy that's being stored in a particular object. The formula for potential energy is given as:
PE = mgh
where,
m = mass
g = gravitational field.
h = height
The actions that'll increase the potential energy of the cup that's placed on the kitchen counter will be:
1. Fill the cup with water - This increases the weight of the cup.
2. Add a handle to the cup - The mass is increased as well.
3. Lift the cup over the counter - The height is increased.