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Impact (mechanics): Quiz

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Question 1: When vehicles collide, the damage is proportionate to the relative ________ of the vehicles, the damage increasing as the square of the velocity since it is the impact kinetic energy (1/2 mv2) which is the variable of importance.
KinematicsSpeedVelocityClassical mechanics

Question 2: These high velocity impacts overcome the ________ between the nail and the substrate.
Lift (force)FrictionDrag (physics)Force

Question 3: In mechanics, an impact is a high ________ or shock applied over a short time period when two or more bodies collide.
PhysicsForceClassical mechanicsEnergy

Question 4: Projectiles apply a Hertzian contact stress at the point of impact to a solid body, with compression stresses under the point, but with ________ loads a short distance away.
Beam (structure)Stress (mechanics)Euler–Bernoulli beam equationBending

Question 5: ________ materials like steel tend to become more brittle at high loading rates, and spalling may occur on the reverse side to the impact if penetration doesn't occur.
DuctilityAluminiumIronCarbon

Question 6: A nail is pounded with a series of impacts, each by a single ________ blow.
ChiselReamerHammerPliers

Question 7: Such a force or ________ usually has a greater effect than a lower force applied over a proportionally longer time period of time.
SpeedAccelerationKinematicsEuclidean vector







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