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