Directions: Construct a quantitative (include numbers) position vs time graph, a velocity vs time graph, and an acceleration vs time graph for the following scenarios.
While cruising along a dark stretch of highway at a speed of 25 m/s, you see that a bridge ahead has been washed out. You apply the brakes and uniformly slow down to a stop in 5.0 seconds.
The velocity values are __negative_. (Positive/Negative)
The acceleration value is ___negative_. (Positive/Negative)
Therefore the object must be ___speeding up_. (Speeding Up/Slowing Down)
2. A poorly tuned Yugo can accelerate from rest to a speed of 28 m/s in 20 s.
The velocity values are __positive_. (Positive/Negative)
The acceleration value is _positive_. (Positive/Negative)
Therefore the object must be __slowing down_. (Speeding Up/Slowing Down)
A bear is sitting at rest at t=0s. At t=5s, the bear notices honey 16 m away and takes off from rest accelerating at a rate of 2 m/s2 for 4 seconds to reach the honey.
In Part 2 of the Motion:
The velocity values are __positive_. (Positive/Negative)
The acceleration value is _positive_. (Positive/Negative)
Therefore the object must be __slowing down_. (Speeding Up/Slowing Down)
A dog runs down his driveway with an initial velocity of -5 m/s for 8 seconds, then uniformly increases his speed to -10 m/s in 5 seconds.
In Part 2 of the Motion:
The velocity values are ___negative_. (Positive/Negative)
The acceleration value is _negative_. (Positive/Negative)
Therefore the object must be _speeding up_. (Speeding Up/Slowing Down)
You are driving on the highway at a rate of 40 m/s for 10 seconds when you notice a cop in front of you. Over the next 5 seconds you uniformly slow down to 35 m/s to avoid getting a speeding ticket.
In Part 2 of the Motion:
The velocity values are _positive_. (Positive/Negative)
The acceleration value is __positive_. (Positive/Negative)
Therefore the object must be __slowing down_. (Speeding Up/Slowing Down)
You are traveling 20 m/s when the stoplight in front of you turns red. You step on your break to uniformly slow down to a rest in 5 seconds. You are stopped at the red light for 3 seconds when the light turns green. You speed back up to 20 m/s over the next 5 seconds.
In Part 1 of the Motion:
The velocity values are __negtive _. (Positive/Negative)
The acceleration value is __negaive_. (Positive/Negative)
Therefore the object must be __speeding up_. (Speeding Up/Slowing Down)
In Part 3 of the Motion:
The velocity values are _. (Positive/Negative)
The acceleration value is _. (Positive/Negative)
Therefore the object must be _. (Speeding Up/Slowing Down)
GRAPH ALL THE PROBLEMS
Answers: 1
Physics, 22.06.2019 01:30
Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33
Answers: 2
Physics, 22.06.2019 05:00
In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.
Answers: 1
Physics, 22.06.2019 10:50
Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.
Answers: 1
Directions: Construct a quantitative (include numbers) position vs time graph, a velocity vs time gr...
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