Unit 1 Review
Flashcard
•
Physics, Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for calculating work done?
Back
Work done (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.
2.
FLASHCARD QUESTION
Front
If a force of 200N is applied over a distance of 10m, how much work is done?
Back
1800 J
3.
FLASHCARD QUESTION
Front
What is torque?
Back
Torque is the measure of the force that can cause an object to rotate about an axis. It is calculated as Torque (τ) = Force (F) × Lever arm distance (r).
4.
FLASHCARD QUESTION
Front
True or False: Torque is the product of a force exerted on an object times the lever arm.
Back
True
5.
FLASHCARD QUESTION
Front
How do you calculate the torque applied to a wrench?
Back
Torque (τ) = Force (F) × Distance (d) from the axis of rotation. For a 15N force applied 50cm away, τ = 15N × 0.5m = 7.5 Nm.
6.
FLASHCARD QUESTION
Front
What is the cross product of two vectors?
Back
The cross product of two vectors results in a vector that is perpendicular to both of the original vectors. It is calculated using the determinant of a matrix formed by the unit vectors and the components of the vectors.
7.
FLASHCARD QUESTION
Front
Calculate the cross product of vectors <3,4,7> and <4,9,2>.
Back
<-55, 22, -9>
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