A stone is dropped from rest from a tall building how fast is the stone moving after 5s
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Answer:
The final velocity is -49.05 meters per second.
Explanation:
Let's use an equation of constant acceleration:
Where a is the acceleration and g is the acceleration caused by gravity.
Since the object is being dropped from rest, .
We're looking for the speed after 5 seconds, so .
So the final velocity is -49.05 meters per second.
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Which describes why people on earth can see light from the stars in the sky that are so far away? A. Light from the stars is visible light and travels in longitudinal waves. Longitudinal waves require a medium to travel; therefore, light is reflected off particles of matter in space to be seen on the earth. B. Light from the stars is visible light and travels in electromagnetic waves. Electromagnetic waves require a medium to travel; therefore, light is reflected off particles of matter in space to be seen on the earth. C. Light from the stars is visible light and travels in electromagnetic waves. Electromagnetic waves do not require a medium to travel; therefore, light travels through the vacuum of space to be seen on the earth. D. Light from the stars is visible light and travels as surface to surface waves. Surface waves require a medium to travel; therefore, light travels from the surface of the star to the surface of the earth. C.?
1. Initial velocity 5m/s, finalvelocity 36km/hr,acceleration 1.25m/s/s.Distance?
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Are metals conductors or insulators?
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Answer:
Urbanization, oil spill, leaky landfill and deforestation are causes of pollution while desertification, smog, contaminated water are the effects of pollution.
Explanation:
Urbanization is generally associated with an increase in the number of industries. The waste materials in different forms from the factories pollute air, water and soil.
The effluents from factories released into rivers cause water pollution and harm the aquatic life. Water contaminated by industrial waste becomes unsuitable for drinking. Forests play a major role in controlling the amount of carbon dioxide in the atmosphere.
Deforestation increases the amount of carbon dioxide in the atmosphere. Oil spills usually occur in oceans and seas and it causes water pollution and threatens aquatic life.
Answer:
Cause
industrial wastes dumped into rivers
oil spilled on land mixes with runoff
sewage dumped into rivers
Effect
destroyed natural habitats
fish die-off
spread of disease
Explanation:
plato
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and the time it took to cover the distance.
To calculate velocity, you need the starting location, the ending location,
and the time it took to go from start to finish.
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Acceleration = (force) / (mass)
If there is no friction . . .
Acceleration = (200N) / (50 kg) = 4m/s²
Change in speed = (acceleration) x (time) = (4 m/s²) x (10 sec) = 40 m/s
Final speed = (speed of the cart before the force began) + (40 m/s more)
(That's about 89 mph faster than the cart was moving before the force started.)
Initial velocity (vi): 0 m/s
Final velocity (vf): ?
Acceleration (a): ?
Force (F): 200 N
Mass (m): 50 kg
Time (t): 10 s
F= ma
200 N= (50kg)(a)
a= +4 m/s^2
a= (vf-vi)/t
+4 m/s^2= (vf - 0m/s)/10s
vf= 40 m/s
Answer: the cart will be moving 40 m/s.
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Answer: This should be a huge help in ur answer...
Explanation: potential energy is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors and kinetic energy is energy which a body possesses by virtue of being in motion.