answer key for physics test motion and forces in 2d
TRANSCRIPT
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Answer key for Physics Test
Motion and forces in 2D
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Q1
• Resultant = sum of all vectors applied
• Equilibriant = vector equal in magnitude to the resultant, but opposite in direction
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Q2
• Horizontal velocity = 5.3 m/s away from house
• Vertical velocity = 3.3 m/s down
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Q3
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Q4
• Systems of equations
• Acceleration = 3.83 m/s2
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Q5
• 8.02 m [ S 4 W]
• 8.02 m [W 86 S]
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Q6
• Μ = 0.19
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Q7
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Q8
• Determine Fnet, forces are slowing toboggan
• Find acceleration: -6.4 m/s2
• Use acceleration to find displacement
• D =2.8 m
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Q9
• 70 N [N 13 E]
• 70 N [E 77N]
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Q 10-11
10) A
11) B