Physics Proportional Reasoning questions Exam 2

For a projectile motion, what is the acceleration along the Y axis?

• 0

• g

• -g

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NGSS.HS-PS2-1

What is the acceleration along the X axis?

• 0

• g

• -g

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NGSS.HS-PS2-1

Motion along a ramp is best analyzed as

• One-dimensional motion in a rotated axis system (X axis along the ramp)

• Two-dimensional motion in a roasted axis system (X axis along the ramp)

• All of the others choice work equally well

• One-dimensional motion in the traditional axis system (horizontal X and Vertical Y)

• Two-dimensional motion in the traditional axis system (horizontal X and Vertical Y)

The ramp shown below makes an angle of 40 above the horizontal. The net acceleration along the X axis is

• 0

• + g sin(40)

• - g cos(40)

• - g sin(40)

• + g cos

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NGSS.HS-PS2-1

A soccer ball is kicked from the ground, launching it in projectile motion along a field. When the ball is in flight.

• 1. Its acceleration is constant

• 1. Its acceleration increases as it falls from its highest point

• 1. Its acceleration decrease as it rises to its highest point

• 1. Its acceleration is always zero

• 1. Itss acceleration increase as it rises to its highest point

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NGSS.HS-PS2-1

A projectile motion is analyzed using the traditional axis system (horizontal X, vertical Y). Which of the following statements is true for motion along the X axis?

• It is in uniform motion

• It is at rest

• None of the rest

• It is constant-acceleration motion with a negative acceleration

• It is constant-acceleration motion with a positive acceleration

In a projectile motion analyzed with the traditional axes system (horizontal X and vertical Y), the object is at rest.

• Along both the X And Y axes

• Along neither the X And Y axes

• Along the X axis but not along Y axis

• Along the X axis but not along Y axis

Which of the following objects has the greatest centripetal acceleration?

• 
• 
• 
• 
• 

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NGSS.HS-PS2-1

In a uniform-circular motion, acceleration

• Always points away from the center

• Is variable

• Is zero

• Always points to the center

• Is parallel to velocity

The SI unit for force is Newton. This is the same as

• Kg m/s^2

• Kg m^2/s^2

• Kg m^2/s

• Kg

• Kg m/s

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NGSS.HS-PS2-1