J
Janely G
Guest
1. suppose that you are in car that is going around a curve. the speedmeter reads a contatnt of 25mph. which of the following is not true.
a. you and the car are accleration
b. your speed is constant
c. your velocity is constant
d. your accperation is constant
2. accleration is defined as the change in
a. positiion
b. velocity divided by the time interval
c. time it takes to moves from one spped to another speed.
d. time it take to moves from one place to another place.
3. one possible unit of speed is
a. feet per meter square
b. meter per second square
c. kilometer per hour.
d. one of the above.
4. ten seconds after starting from rest, a car is moving at 80 m/s. what is the cars average accleration?
a.0.125ms
b.1.25m/s
c.10m/s
d. 8.0 m/s
5. speed is measured of how fats something is moving. but also we can define it as
a. velocity
b. the rate at whoc distance is covered
c. how far something is moving
d. rate at which velocity is moving
6. if a freeling falling object were somehow equipped with speedometer, its speed reading would increase each second by
a. about 5 m/s
b. about 10 m/s
c. about 15 m/s
d. about 20 m/s
7. a feather and coin acclerate equally when
a. there is no air aorund them
b. there is air around them
c. there is no friction between them
d. there is friction between them
8. the meaning of free fall is
a. the distance covered per unit time
b. the change of speed in an object
c. motion under the influence of gravitational force only
d. none of the above
9. instrument used to measure instanteneous speed
a. odometer
b. chronometer
c. voltometer
d. speedometer
10.a skateborder starting from rest acclerates down to a ramp at 4.0 m/s^s for 4.0 seconds, what is the final speed of the skateborder?
a. 16 m/s
b. 4 m/s
c. 1 m/s
d. 1 m/s^2
11. a quanity that is completed described by magnitude only is
a. vecctor quanity
b. scalar quanity
c. time quanity
d. direction quanity
12. in the absense of air resistance, the angle at which a thrown ball will go the farthest is
a. 75 degreees
b. 60 degrees
c. 45 degrees
d. 30 degrees
13. a plane flies north at 200 km/h, at the same time, there is a wind of 50 km/h from the west. use the pathgorem theorem to find the resultant elocity of the plane.
14. when you roll a ball along a horizontal surface, the velocity is.
a. constant
b. zero
c. independant
d. dpenedant
15. the horizontal componet of projectiles velocity is independant of:
a. the vertical component
b. the range of the projectile
c. time
d. none of the above
16. suppose that an airplane flies at 80 km/h north caught in a strong cross wind of 60 km/h blowing from west to east. what would be the velocity relative to the ground.
a, 70 km/h
b.48 km/h
c.140 km/h
d.100 km/h
17. a velocity vector is
a. a quanity that has magnitude
b. a quanity that has direction
c. a quanity that has magnitude and direction
d. all of the above
18. which of the following would not be considered a projectile
a, a cannonball thrown through the air
b. a cannonball rolling down a slope
c. a cannonball thrown staright up
d. a cannnonball rolling of the edge of a table
19. an airplane whose speed is 200 km/h flies parralel to the direction of wind itha speed of 90 km/h. what are the two possible speed of the plane relative to the ground ?
20. the momentum change of an object is equal to the
a. force acting on it
b. velocity change of the object
c. impulse acting on it
d. objects mass times the force acting on it
21. which has greater mass, a heavy truck at rest or a rolling skateboard
22. a collision is considered elastic if,
a. there is no sound generated during the collison
b. the objects that collide dont get hot
c. there is no lasting deformation
d. all of the above
23. compared to sports cars moving at 30 mph, the same sports car moving at 60 mph has
a. the same monetum
b. twice the momentum
c. four times as much momentum
d. none of the above
24. the cannonball launched from a cannon with a long barrel bill faster because the cannonbal recieves a greater
a. force
b. impulse
c. both of these
d. neither of these
25. a 4kg ball has a momentum of 12 kg -m/s . what is the ball speed
a. 3 m/s
b. 4 m/s
c. 12 m/s
d. 48 m/s
26. what is the direction of the force that acts on clothes in the spin cycle of a washing machine?
a. up
b. down
c. inward
d. outward
27. which of the following is NOT a unit of a rotational speed
a. revolutions per second
b. rotations per second
c. revolution per minute
d. meters per second
28."centrifigural forces" are an apparent reality to observe in a refrence frame that is
a. moving at constant velocity
b. an inertial refrence frame
c. at rest
d. rotating
29. which has greater angular speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail.
a. the outside horse
b. the inside horse
c. neither
a. you and the car are accleration
b. your speed is constant
c. your velocity is constant
d. your accperation is constant
2. accleration is defined as the change in
a. positiion
b. velocity divided by the time interval
c. time it takes to moves from one spped to another speed.
d. time it take to moves from one place to another place.
3. one possible unit of speed is
a. feet per meter square
b. meter per second square
c. kilometer per hour.
d. one of the above.
4. ten seconds after starting from rest, a car is moving at 80 m/s. what is the cars average accleration?
a.0.125ms
b.1.25m/s
c.10m/s
d. 8.0 m/s
5. speed is measured of how fats something is moving. but also we can define it as
a. velocity
b. the rate at whoc distance is covered
c. how far something is moving
d. rate at which velocity is moving
6. if a freeling falling object were somehow equipped with speedometer, its speed reading would increase each second by
a. about 5 m/s
b. about 10 m/s
c. about 15 m/s
d. about 20 m/s
7. a feather and coin acclerate equally when
a. there is no air aorund them
b. there is air around them
c. there is no friction between them
d. there is friction between them
8. the meaning of free fall is
a. the distance covered per unit time
b. the change of speed in an object
c. motion under the influence of gravitational force only
d. none of the above
9. instrument used to measure instanteneous speed
a. odometer
b. chronometer
c. voltometer
d. speedometer
10.a skateborder starting from rest acclerates down to a ramp at 4.0 m/s^s for 4.0 seconds, what is the final speed of the skateborder?
a. 16 m/s
b. 4 m/s
c. 1 m/s
d. 1 m/s^2
11. a quanity that is completed described by magnitude only is
a. vecctor quanity
b. scalar quanity
c. time quanity
d. direction quanity
12. in the absense of air resistance, the angle at which a thrown ball will go the farthest is
a. 75 degreees
b. 60 degrees
c. 45 degrees
d. 30 degrees
13. a plane flies north at 200 km/h, at the same time, there is a wind of 50 km/h from the west. use the pathgorem theorem to find the resultant elocity of the plane.
14. when you roll a ball along a horizontal surface, the velocity is.
a. constant
b. zero
c. independant
d. dpenedant
15. the horizontal componet of projectiles velocity is independant of:
a. the vertical component
b. the range of the projectile
c. time
d. none of the above
16. suppose that an airplane flies at 80 km/h north caught in a strong cross wind of 60 km/h blowing from west to east. what would be the velocity relative to the ground.
a, 70 km/h
b.48 km/h
c.140 km/h
d.100 km/h
17. a velocity vector is
a. a quanity that has magnitude
b. a quanity that has direction
c. a quanity that has magnitude and direction
d. all of the above
18. which of the following would not be considered a projectile
a, a cannonball thrown through the air
b. a cannonball rolling down a slope
c. a cannonball thrown staright up
d. a cannnonball rolling of the edge of a table
19. an airplane whose speed is 200 km/h flies parralel to the direction of wind itha speed of 90 km/h. what are the two possible speed of the plane relative to the ground ?
20. the momentum change of an object is equal to the
a. force acting on it
b. velocity change of the object
c. impulse acting on it
d. objects mass times the force acting on it
21. which has greater mass, a heavy truck at rest or a rolling skateboard
22. a collision is considered elastic if,
a. there is no sound generated during the collison
b. the objects that collide dont get hot
c. there is no lasting deformation
d. all of the above
23. compared to sports cars moving at 30 mph, the same sports car moving at 60 mph has
a. the same monetum
b. twice the momentum
c. four times as much momentum
d. none of the above
24. the cannonball launched from a cannon with a long barrel bill faster because the cannonbal recieves a greater
a. force
b. impulse
c. both of these
d. neither of these
25. a 4kg ball has a momentum of 12 kg -m/s . what is the ball speed
a. 3 m/s
b. 4 m/s
c. 12 m/s
d. 48 m/s
26. what is the direction of the force that acts on clothes in the spin cycle of a washing machine?
a. up
b. down
c. inward
d. outward
27. which of the following is NOT a unit of a rotational speed
a. revolutions per second
b. rotations per second
c. revolution per minute
d. meters per second
28."centrifigural forces" are an apparent reality to observe in a refrence frame that is
a. moving at constant velocity
b. an inertial refrence frame
c. at rest
d. rotating
29. which has greater angular speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail.
a. the outside horse
b. the inside horse
c. neither