Download Semester 1 Review Answers - School District of La Crosse

KONICHEK
PHYSICS SEMESTER 1 FINAL REVIEW
787-0215
1. Which of the following are the result of the work of physicist? All
2. Which of the following is called the language of physics? Mathematics
3. Physics is the study of: Matter and energy
4. One of the first European scientist to claim publicly that knowledge must be based on
observations and experiment was: Galileo
5. If 98.3 and 45 and multiplied together, the answer should have at the most__2___
significant figures
6. The fundamental SI unit for time is: second
7. In scientific notation a number between 1 and 10 is being multiplied by Whole #
power of 10
8. The metric prefix that means 100 is: hecto
10. In an experiment, the value which is being tested is called: dependant variable
11. To avoid problems with reading equipment, laboratory equipment should be read: eye
level
12. Solve the following for X:
4Y= 3X+9 4/3Y-3
13. The variable which is manipulated during an experiment is:dependant
14. The degree of exactness to which a measurement can be reproduced is: precision
15. A runner is 5.0km east of another runner, who is 5.0km east of a parking lot. Where is
the first runner with respect to the parking lot? +10km from the lot
16. The parking lot which the runners distances are from is called: reference point
17. The slope of a line tangent to a time position graph is always the
objects:instantaneous velocity
18. In a time- position graph, the velocity can be determined by:rise/run
19. On a velocity-time graph, a slope tangent to the curve at a given point will
give:instantaneous velocity
20. Constant acceleration on a time-velocity graph will produce a curve that is:straight
21. Average speed on any trip would deal with which two quantities? total distance per
total time
22. A man walks 4 Km south and 4 Km north what is his total displacement? 0
23. The quantity which measures magnitude only would most likely be:speed
24. The velocity given by the speedometer of a car would be considered a(n)instaneous
25. Displacement is best defined as: the amt out of postion from a reference point
26. When the average velocity is the same for all instances, the velocity is said to be:
constant
27.With a distance time graph the slope of the line represents: velocity
28. The branch of physics which deals with straight line motion is:kinematics
29.The point which provides a basis for motion is called: ref. point
30.A car moves at 54km/hr what would it’s velocity be in m/s?15m/s
31.What would be the speed of the car in Mi/hr( 1.6Km=1 Mi)33.75mi/hr
32.A car goes from 70Km/h to 50Km/h, what can be said about its velocity?neg velocity
33.A man walks 40m North, and 30m south. What can be said about his total distance
and displacement? displacement= 10m distance 70m
34. A change in velocity is according to the Physicist is: acceleration
35. A vector would be represented by which of the following? vel and accel
36. A man moves from 50m to 70m in 3 seconds. What would be his velocity?6.6m/s
37. a person is running at 5m/s the increases his speed to 9m/s in 2 seconds. His
acceleration would be2m/s
38. If a man turns the corner at 6m/s, what can be said about his motion?vel is
changinging, therefore its accel
39. If a constant acceleration is happening, and a car travels for 4 seconds, what can be
said about the distance traveled?dist is 16 times farther
40.The vertical change of position of an object dropped and that of an identical object
shot in a horizontally from the same height the same
41 For an object moving along a trajectory, the horizontal acceleration of an
object________as the position changes
a. is constant
b. increases
d. decreases
42 The vertical change in position of an object that is dropped and that of an identical
object is thrown horizontally from the same height. the same
43 Suppose an object is dropped from a moving train. The time it takes to
fall:Independant of the observers position
44 An observer on a train will see an object fall__straight________, while a stationary
observer watching the train pass will see the object path as___trajectory_______
45. To find the horizontal component of a shot object, the correct equation would
be:xcosθ
46. Why would a bullet shot out of a rifle and a bullet dropped strike the ground at the
same time?Horizontal component is ignored, since no force is acting on it
47. The force which cause objects to move in uniform circular motion about a fixed point
is call: centripetal
48. The tangent force from the circular motion of an object is: inertia
49. With simple harmonic motion:the resting poistion is passed through as the inverse
if the string's length
50.For a projectile, the vertical component of the flight is usually: force of gravity
51. Where would a pitcher have to aim a fast ball in order to have it pass at the height of
the batter’s chest? just above the batter
52. The period of a simple pendulum depends upon length of the pendulum
53. According to Newton’s Universal Gravitation the force of attraction is directly
proportional to: product of the masses
54. As distance decreases the force of attraction would: decrease by the inverse square
of the distance
55. The Cavendish experiment established the Value of: G- Universal Grav. constant
56.To find the vertical component of a shot object the most correct equation would be:
Xsinθ
57. A line drawn from the sun to the planet sweeps out equal areas in equal time was
proposed by: Kepler
58. Anything which has mass is surrounded by: gravitational field
59.Space shuttle astronauts seem to be weightless because: they are in free fall
60.An object moving in circular motion experiences 2 forces, they are: centripetal force
Matching- Vocabulary
.____accuracy
.used to write really large or small numbers
.____precision
.an indication of the degree of certainty of a
number
.____significant figure
. magnitude and direction
.____scientific notation
. closeness to the expected answer
.____vector
. degree of exactness
._____displacement
. velocity per unit time
._____instantaneous velocity
. rise/run
._____gravity
. force exerted by mass
_____average velocity
. velocity at any given time
.____acceleration
. distance from a rest position
.____Gravitational force
. holds the electrons to the nucleus
.____electromagnetic force
. holds the universe togeteher
.____strong nuclear
. study of how objects move
.____kinematics
. study of why objects move
.____dynamics
holds the nucleus together
.____1st law
.F=Ma
____2nd Law
.F=Gm1m2/d2
____3rd law
inertia
____universal gravitation
ellipses
____keplers 1st law
action force= reaction force
PROBLEM SET- YOU HAVE TO GO THROUGH YOUR CLASS NOTES AND
FIGURE OUT THE CORRECT EQUATION
1. A car is accelerating at 4.6m/s2, and the force is 920N. Find the mass of the car?
2. A .06Kg bullet is shot from a gun. The velocity as it leaves the barrel of the gun is
220m/s. The barrel of the gun is 1.7m. Find the force the bullet while it was still in the
barrel of the gun.
3. THE VELOCITY OF A BIKE IS 4M/S.IT HAS TRAVELED FOR 5 MINUTES. HOW FAR DID IT
GO ?
4. a HIGH SPEED TRAIN TRAVELS FROM PARIS TO LYONS AT AN AVERAGE VELOCITY OF+
227KM/H. THE TRIP TAKES 2 HOURS. HOW FAR IS IT FROM LYONS TO PARIS
5. A motorboat heads due west at 17Km/h across a river whose current is south at 8m/s.
Draw the vector diagram, what is the resultant vector of this?
6. An airplane is flying zero degrees at 300K/h, and the wind is blowing at 90 degrees at
40Km/h, what is the resultant velocity of the plane?
7. 2. A bullet is shot at 55m/s at an angle of 340 above the horizon
A) How long did it take to hit the ground?
B) How high did the bullet fly?
C) What was the range
8. A slingshot like swinging above a person’s head is 4 feet in diameter, and has a velocity of 7m/s. Find
the centripetal acceleration of the rock in the pouch
9. On another planet a pendulum is 1.8m long and has a period of 3.2s. what is the acceleration of
gravity of this planet?
10. Phobias a moon around mars has a period of 3 days and a radius of 2.6 units. Demoes
has a radius of 6 units, what is its period?
11. A asteroid revolves around the sun with a average orbital radius three times that of
earth’s. Predict the period of the asteroid in earth years
12. a planet has a mass of 4x1010Kg and it’s moon has a mass of 6x104Kg, and the
distance id 5x104m. find the force of attraction