AP Physics 1 CH3

what is a scalar? 

• a quantity having only magnitude, not direction.
  
• a quantity having both a magnitude and a direction.
• a quantity having a direction but no magnitude.
• a thing with some stuff. 

_____is an example of a scalar quantity

• velocity
• force
• volume
• acceleration

 A plane flying 500 MI/hr due north has a tail wind of 45 MI/hr the resultant velocity is:

•  545 miles/hour due south.
•  455 miles/hour north.
•  545 miles/hr due north.
•  455 MI/hr due south

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

If a = (3, 2) and b = (-5, 3), what is a + b ?

• (2, 5)
• (-2, 5)
• (8, 5)
• (8, -1)

 The resultant magnitude of two vectors

• Always positive
• The same 
• Always negative 
• The sum of the two 

Tags

NGSS.HS-PS2-2

A particle moves along the x-axis with an acceleration of a = 18t, where a has units of m/s2 . If the particle at time t = 0 is at the origin with a velocity of -12 m/s, what is its position at t = 4.0s?

• 12m
• 72m
• 60m
• 144m

Tags

NGSS.HS-PS2-1

Consider a ball thrown up from the surface of the earth into the air at an angle of 30° above the horizontal. Air friction is negligible. Just after the ball is released, its acceleration is:

•  Upwards at 9.8 m/s2
• Upwards at 4.9 m/s2
• Downwards at 9.8 m/s2
• 0 m/s2

Tags

NGSS.HS-PS2-1

Two vectors of the same magnitude are added; one pointing east, one west. The magnitude of the resultant vector is

• 0
• 1
• 2
• 3
  

The _________ theorem can be used to find the resultant of a right triangle

• socratic
• archemedes
• pythagorean
• d. none of the answers
  

A vector has both magnitude and __________.

• mass
• time
• direction
• none of the answers

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5