1. A ball upward and later returns to the same level (upward is taken to be the

Question

1. A ball upward and later returns to the same level (upward is taken to be the positive is thrown direction). At any time during flight, the displacement of the ball from the initial position A) positive during both ascent and descent -B) C) D) E) negative during both ascent and descent negative during ascent and positive during descent positive during ascent and negative during descent none of the above 2. A projectile is thrown vertically upward at 35 m/s. Taking g-10. m/s2, the velocity (neglect air resistance) the object 5 seconds later is: A) 7.0 m/s up B) 15 m/s down C) 15 m/s up D) 85 m/s down E) 85 m/s up hich of the following five (x) versus (time) graphs represents the motion of an objec whose speed is increasing? A) I B) II C) II D) IV A projectile is shot vertically upward (neglect air resistance). While it is rising: A) its velocity and acceleration are both upward B) its velocity is upward and its acceleration is downward C) its velocity and acceleration are both downward D) its velocity is downward and its acceleration is upward E) its velocity and acceleration are both decreasing A vector S of magnitude 6 and another vector T are added to produce a Res vector of magnitude 12. The vector T: A) must have a magnitude of at least 6 but no more than 18 3) may have a magnitude of20

Explanation / Answer

1)A

displacement from point of release is always positive

2)B)15m down

=35-5*10=-15

3)A

slope gives speed

4)B

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