Phys 205 Final UPDATED Actual Exam Questions and CORRECT Answers
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Course
Phys 205
Institution
Phys 205
Phys 205 Final UPDATED Actual Exam
Questions and CORRECT Answers
the scientist who rolled balls down a track and used his results to clarify the meaning of
accelerated motion was - CORRECT ANSWER- galileo
standard unit of length in the metric system - CORRECT ANSWER- meter
standard unit of f...
Phys 205 Final UPDATED Actual Exam
Questions and CORRECT Answers
the scientist who rolled balls down a track and used his results to clarify the meaning of
accelerated motion was - CORRECT ANSWER- ✔✔galileo
standard unit of length in the metric system - CORRECT ANSWER- ✔✔meter
standard unit of force in the metric system - CORRECT ANSWER- ✔✔Newton
standard unit for mass in metric system - CORRECT ANSWER- ✔✔kilogram
which equation best describes distance vs time for both accelerated and non-accelerated
straight line motion? - CORRECT ANSWER- ✔✔d=vavg*t
a car travels 19 km in 5.q hours. what is the size of the average velocity in km/hr? -
CORRECT ANSWER- ✔✔3.73
a person walks 15.2 m at an average velocity of 40 m/s. how long did it take? - CORRECT
ANSWER- ✔✔0.38
delta x / delta t - CORRECT ANSWER- ✔✔velocity
delta v/delta t - CORRECT ANSWER- ✔✔acceleration
if an object is moving on a circle at a constant speed then Newton's Laws of motion say it
must be acted on by an outside force - CORRECT ANSWER- ✔✔true
In general to be accelerating an object has to be gaining linear speed - CORRECT ANSWER-
✔✔false
, average speed if an object moving along a straight line is changing at a constant rate we can
take the final speed and the initial speed, add them together, and divide by two - CORRECT
ANSWER- ✔✔true
formula needed to calculate average velocity from initial velocity and final velocity is -
CORRECT ANSWER- ✔✔vavg= (vf+vi)/2
if drop an object from rest, how fast is it moving 3 seconds later - CORRECT ANSWER-
✔✔-30
what is the average velocity of the object dropped after 3 seconds if it started from rest? -
CORRECT ANSWER- ✔✔-15
if you drop an object from rest near the surface of the earth and it falls freely, then the net
distance it would travel in 3 seconds is - CORRECT ANSWER- ✔✔-45
match newtons laws of motion - CORRECT ANSWER- ✔✔1: an obj in motion remains in
motion
2: for every action there is an equal and opp reaction
3: the acceleration of an object is in the direction of the net force
the mass of an obj in kg is the same as an obj's weight - CORRECT ANSWER- ✔✔false
which of the following equations describes how weight is found near the surface of the earth?
- CORRECT ANSWER- ✔✔=mg
a runner sprinting from rest to 4.7 m/s in 1.2 sec has an average acceleration of - CORRECT
ANSWER- ✔✔3.92
free body diagram - CORRECT ANSWER- ✔✔Ff: frictional force
Fn: normal force
Fgr: force due to gravity
Fp: pull on the box from the rope
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