47 Questions
| Total Attempts: 503

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Questions and Answers

- 1.The average distance between the sun and the earth is 93 x 10(6) miles. This distance when expressed in kilometers is a smaller number than 93 x 10(6).
- A.
True

- B.
False

- 2.The volume of a given object is 1 m(3). If the dimensions of that object are measured in centimeters, the volume will be 1000cm3.
- A.
True

- B.
False

- 3.The diameter of a certain cylinder and a certain sphere are equal. The volume of the cylinder of height equal to the diameter is equal to that of the sphere.
- A.
True

- B.
False

- 4.Instantaneous measurement of the location of a satellite using triangulation requires a minimum of two points on the surface of the earth. The location of the two points is assumed to have been measured.
- A.
True

- B.
False

- 5.A vector in two dimensions does not always require two components to fully specify the vector.
- A.
True

- B.
False

- 6.For a vector to be Xero in two dimensions the sum of its two components must always add up to zero.
- A.
True

- B.
False

- 7.The magnitude of the sum of two vectors each 5cm long is 4cm.
- A.
True

- B.
False

- 8.A vector is 2m long and is directed at an angle of 30 degrees to the x-axis y-component of this vector is 1m.
- A.
True

- B.
False

- 9.A vector is directed parallel to the y-axis can have a non zero x-component.
- A.
True

- B.
False

- 10.An object moving with a constant velocity of 2m/sec travels a distance of 4m in 2 secs.
- A.
True

- B.
False

- 11.An object moves along a line for 2 sec with a velocity of 1 m/sec and for 1 sec with a velocity of 2m/sec. The average velocity during these 3 secs is 1.5m/sec.
- A.
True

- B.
False

- 12.The velocity of an object moving along the x-axis changes uniformly from a value of -1m to 1m/sec in 1 sec. The object is undergoing an acceleration of 2m/sec(2).
- A.
True

- B.
False

- 13.An object thrown vertically upward with a velocity of 9.8m/sec will reach the maximum height in two seconds.
- A.
True

- B.
False

- 14.In free-fall, the distance thru which an object falls in any given second interval without air drag is the same.
- A.
True

- B.
False

- 15.The equation F=F1+F2 in the addition of two forces does not imply that the units (dimensions) of F are the same as that of F1 or F2.
- A.
True

- B.
False

- 16.Projectile motion is a one-dimensional motion.
- A.
True

- B.
False

- 17.At the maximum height of a projectile, the vertical component of the projectile's velocity is maximum.
- A.
True

- B.
False

- 18.The range of a projectile depends on the angle of projection with the horizontal.
- A.
True

- B.
False

- 19.The horizontal component of the projectile velocity is not constant. No drag is present.
- A.
True

- B.
False

- 20.The two perpendicular sides of a certain rectangle and a certain right triangle are equal. The area of the rectangle is equal to the area of the triangle.
- A.
True

- B.
False

- 21.Instantaneous measurement of the location of a satellite using triangulation requires a minimum of two points on the surface of the earth. The location of the two points is assumed to be specified.
- A.
True

- B.
False

- 22.The magnitude of the sum of two vectors each 5cm long is 6cm.
- A.
True

- B.
False

- 23.A vector is 2m long and is directed at an angle of 60 degrees to the x-axis. The x-component of this vector is 1m.
- A.
True

- B.
False

- 24.A vector directed parallel to the y-axis must have a non-zero x-component.
- A.
True

- B.
False

- 25.In free fall the distance thru which an object falls in any given one-second interval without air drag increases as the interval gets later and later.
- A.
True

- B.
False