Answer:
A. 33.77 m/s
B. 6.20 s
Explanation:
Frame of reference:
Gravity g=-9.8 m/s^2; Initial position (roof) y=0; Final Position street y= -21 m
Initial velocity upwards v= 27 m/s
Part A. Using kinematics expression for velocities and distance:
Part B. Using Kinematics expression for distance, time and initial velocity
Since it is a second order equation for time, we solved it with a calculator. We pick the positive solution.
<span> A. stops accelerating </span>
<span> B. stops speeding up </span>
<span> C. experiences equal forces of gravity and air resistance </span>
<span> D. all of the above</span>
A full lake is dropping at its constant rate, meaning it is unchanging over time.
After 4 weeks’ time, it already dropped 3 feet.
Now, let’s solve for the Unit rate based on the given data.
=> 3 feet in 4 weeks
=> Unit rate is 3 feet per 4 weeks
=> in 4 weeks there are (7 * 4) = 28 days
=> 3 feet / 28 days
=> the Unit rate is .107 feet / day
<h3>SCIENTIFIC INSTRUMENT</h3>
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- What scientific instrument is sensitive enough to detect a planet transiting a star on the Kepler Spacecraft?
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- A photometer is an instrument that measures and quantifies the brightness of a celestial body.
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<h3>Mutual
Information:</h3>
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