Reaction time
velocity
acceleration
centripetal force
random
100
the time one takes to react to a situation
Reaction time
100
Distance over time with a direction
Velocity
100
the change of speed over time
Acceleration
100
the force that causes an object to move along a circular path
Centripetal Force
100
A sprinter running a typical 100-meter race runs at a constant speed throughout the entire race. True or False?
False, a sprinter would be accelerating throughout the entire race.
200
Which of the following LEAST affects the reaction time of a person driving a car? 1) time of day the test was conducted 2) the type of car 3) if the driver was sleepy
2) the type of car
200
Velocity is to speed as displacement is to _________.
Distance
200
Which measurement of an average classroom door is closest to 2 meters? 1) height 2) thickness 3) surface area 4) width
1) height
200
Which terms represent a vector quantity and its respective unit? 1) momentum - newton 2) speed - meters/second 3) force - newton 4) eight - kilogram
3) force - newton
200
A runner at the end of a race is getting tired and slowing. The runner is ______. a) moving at a constant speed. b) increasing his overall average speed. c) negatively accelerating.
c) negatively accelerating.
300
a race car travels at 110 meters per second for 20 seconds. how far did the driver travel during the 20 second time interval, in kilometers?
2.2 kilometers
300
One car travels 40 meters due east in 5.0 seconds, and a second car travels 64 meters due west in 8.0 seconds. during their periods of travel, the cars definitely had the same _______?_________
average speed
300
A 2.0 X 10^3 kilogram car travels at a constant speed of 12 m/s around a circular curve of a radius of 30 meters. As the car goes around the curve, in which direction is the centripetal force directed?
towards the center of the circular curve.
300
Science has been defined by some as the search to put the world in order. Most areas of science have many classifications guides. For instance, most biologists classify living organisms into one of the five major kingdoms. Science investigators initially use classification systems to:
organize their observations in a meaningful way.
300
A drug company wants to enter the pain reliever market. Aspirin, ibuprofen, and naproxen are a few of the most common pain relievers. The most likely strategy the company should use to focus its research and development efforts is to:
follow the scientific method. Bonus, name the steps!
400
A scientist is planning to carry out an experiment on the effect of pH on the function of a certain enzyme found in primates. which would NOT be an appropriate first step? 1) having discussions with other scientists 2) using what is already known about the enzyme 3) completing a table of expected results
3) completing a table of expected results
400
A student wants to complete a research project on antibiotics and bacteria. Which source would provide the most reliable information for use in the student's research project investigating the effects of antibiotics on disease-causing bacteria.
A science journal
400
For years researchers in New Zealand searched for an orchid, corybus carseii. The plant only flowered two days out of the entire year. After years of looking the scientists believed that the orchid was now extinct. As they packed up their gear they discovered a flattened sample of the orchid beneath where they originally placed their tents. the story best illustrates?
How the search for scientific knowledge can have unexpected findings.
400
In 1926, a scientist, James summer, accidentally left a sample of an enzyme preparation in the refrigerator over the weekend. The next week he found that the solution from the refrigerator had grown protein crystals. for 15 years he tried to convince others of his discovery that large molecules could form crystals. Most scientists at the time believed that only small molecules could make crystals. eventually his view was accepted and he won the Nobel Prize in chemistry in 1946. What does this story illustrate?
New scientific ideas are often rejected by the scientific establishment.
400
Many early medical doctors believe that illness and disease was due to evil spirits that occupied the body. Many patients lost their lives when subjected to treatments that were more deadly than the original illness. Researchers who supported a pathogenic cause for disease were often ridiculed during those early times. A 'critical mass' of scientists who supported the modern germ theory was required before the crude medical practices were stopped. this story illustrates?
Changes in philosophy occur slowly and require the scientific community to be convinced before full acceptance of the new ideas
500
Does a race car driver need a better response time than someone driving around school?
Since a race car driver travels at a much higher speed s/he needs a faster reaction time. However, distractions for the school bus driver increase his/her reaction time.
500
How do the amounts of time taken by champion 100 meter runner to travel the first and last 50 meters of a sprint compare?
The time taken to run the first 50 meters is usually longer because the runner is starting from zero and must accelerate up to the final speed.
500
A passenger in a moving car and is watching the necklace hanging on the rear view mirror. draw what it would look like when the car is moving at a constant speed in a straight line?
Necklace is straight up and down.
500
what are three factors that effect following distance, breaking distance, and total stopping distance.
Velocity, reaction time, friction, acceleration.
500
Name 3 factors that reduce friction on the road?
Ice, rain, balding(old) tire
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