Physics 313 Review-Kinematics

Which of the following is an example of a Vector quantity?

• acceleration
• mass
• volume
• time

Which statement describes a vector?

• It has magnitude but no direction
• It has direction but no magnitude
• It has both direction and magnitude
• It has constant magnitude but no
   direction

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

A child walks 5 metres north, then 4 metres east, and finally 2 metres south. What is the magnitude of the resultant displacement of the child after the entire walk?

• 1.0 m

• 5.0 m

• 3.0 m

• 11.0 m

The horizontal component of a projectile's velocity is independent of _____.

• the vertical component of its velocity
• the range of the projectile
• time
• all of these answers

A ball is thrown into the air at some angle between 10 and 90 degrees.  At the very top of the ball's path, its velocity is _____.

• entirely vertical
• entirely horizontal
• both vertical and horizontal
• more information needed

What is the horizontal acceleration of a projectile?

• 0 m/s²
• 9.8 m/s²

An object is projected horizontally from a cliff.  The time it takes to hit the ground is

• more than if it was just dropped
• less than if it was just dropped
• the same amount of time than if it was just dropped
• impossible to determine

A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be 

• less than the speed it had when thrown upwards.
• more than the speed it had when thrown upwards.
• the same as the speed it had when thrown upwards.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees.  Which is in the air for longer? (assume no air resistance)

• 25 degrees
• 65 degrees
• same for both

Which angle will produce the greatest range (in the absence of air resistance)?

• 0 degrees
• 45 degrees
• 90 degrees
• none of these