Answer:
375 km
Explanation:
Using the equation, d = vt, we simply plug in the numbers:
v = 150 km/hr
t = 2.5 h
d = (150 km/hr)*(2.5 h)
d = 375 km
Answer:
Why are human beings not called autotrophs even if they make their food in
the kitchen?
How does photosynthesis help to maintain the percentage of oxygen and
carbondioxide in the atmosphere?
Explain photosynthesis with the help of a word equation.
Answer:
Mass = Size, Weight = Heaviness
Explanation:
Mass is how much matter that is in an object
Weight is a measurement that indicates how heavy something
Take Sally's position to be the origin, and up-the-ramp to be the positive direction. The ball travels a distance <em>x</em> in time <em>t</em> of
<em>x</em> = <em>u</em> <em>t</em> + 1/2 (- 3.7 m/s²) <em>t</em>²
where <em>u</em> is the ball's initial velocity.
Its velocity <em>v</em> at time <em>t</em> is
<em>v</em> = <em>u</em> + (- 3.7 m/s²) <em>t</em>
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Let <em>T</em> be the time it takes for the ball to reach the second person 19.6 m up the ramp. At this time, the ball attains a velocity of 4.9 m/s, so that
4.9 m/s = <em>u</em> + (- 3.7 m/s²) <em>T</em>
<em>T</em> = (<em>u</em> - 4.9 m/s) / (3.7 m/s²)
Substitute this into the distance equation, with <em>x</em> = 19.6 m, and solve for <em>u</em> :
19.6 m = <em>u</em> (<em>u</em> - 4.9 m/s) / (3.7 m/s²) + 1/2 (- 3.7 m/s²) ((<em>u</em> - 4.9 m/s) / (3.7 m/s²))²
<em>u</em> ≈ 13 m/s