If the scientist repeats the experiment over and over and gets the same results. Also if the scientist peer reviews the experiment to make sure there is no bias in his or her results.
Top left: The slope of the line gives the (constant) acceleration of the moving object because the plot describes the velocity of some moving object. It's hard to tell what points the line passes through in the picture you took, but whatever slope/acceleration you find, that value will stay the same regardless of the time.
Top middle: The slope of the line is negative, which means acceleration has a negative sign. And because the line describes velocity over time, the fact that velocity is linear means that acceleration is constant.
Top right: The acceleration is the slope of the tangent line to the parabola at . You can visually confirm that the slope of this line would be positive. Now, the average velocity between and is
Judging by the plot, seems like a pretty reasonable choice among the answers.
Bottom left: The slope of the tangent line at any point on the plot would be negative. Because velocity is non-linear, will not be constant.
Bottom middle: Opposite situation as in [bottom left].
Bottom right: The acceleration can only be negative for , which means must be the correct answer.
Answer:
Kinetic Energy is the energy an object has owing to its motion. In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.
Explanation:
hint
Answer:
High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones. Regional and seasonal severe weather phenomena include blizzards (snowstorms), ice storms, and duststorms.
Explanation:High winds- wind speeds as low as 23 knots (43 km/h) may lead to power outages when tree branches fall and disrupt power lines. Once wind exceed 135 knots (250 km/h) within strong tropical cyclones and tornadoes, homes completely collapse, and significant damage is done to larger buildings. Total disruption occurs once wind exceeds 175 knots (324 km/h)
Tornado- Typically look like a narrow funnel reaching from the clouds to the ground. Their wind speed goes from 65 to 250 miles per hour.
"An extreme weather condition in which we face the high speed wind in combination with heavy snow."
As for any blizzard has the normal wind speed of about 40 mph, and the visibility range reduces to less then 500 ft.