ps150_public_final - Sample Final questions for PS 150 1...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Sample Final questions for PS 150 1) Which of the following is an accurate statement? A) Rotating a vector about an axis passing through the tip of the vector does not change the vector. B) The magnitude of a vector can be zero even though one of its components is not zero. C) The magnitude of a vector is independent of the orientation of the coordinate system used. D) It is possible to add a scalar quantity to a vector. E) Even though two vectors have unequal magnitudes, it is possible that their vector sum is zero. 2) Two vectors are given as follows: ˆ ˆˆ 32 2 A ij k ±± r and ˆ 25 2 B k ±± ² r . The scalar product AB ³ r r is closest to A) -20 B) -12 C) zero D) 8 E) 12 3) A ball is projected upward at time t = 0.0 s, from a point on a roof 30 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 32.5 m/s. Consider all quantities as positive in the upward direction. At time t = 2.1 s, the acceleration of the ball is closest to: A) -5 m/ B) -10 m/ C) zero D) +10 m/ E) +5 m/ 4) A test rocket is fired straight up from rest with a net acceleration of 20 m/s 2 . After 4 seconds the motor turns off, but the rocket continues to coast upward. What maximum elevation does the rocket reach? A) 320 m B) 408 m C) 160 m D) 327 m E) 487 m 5) A package is dropped from an airplane traveling horizontally at constant speed. Friction is negligible. One second later a second package is dropped. Which of the following is an accurate statement? A) The distance between the two packages will remain constant as they fall. B) The horizontal distance between the packages will increase as they fall. C) The horizontal distance between the two packages will decrease as they fall. D) The distance between the two packages will steadily increase as they fall. E) The second package will hit the ground more than one second after the first hits.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/05/2010 for the course SCIENCE PS 202 taught by Professor L.khazan during the Spring '01 term at Camden County.

Page1 / 6

ps150_public_final - Sample Final questions for PS 150 1...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online