WorksheetsDynamics: Impact and the Coefficient of Restitution
Total questions: 8
Worksheet time: 3mins
In mechanics, impact occurs when 2 bodies collide in a short period of time, causing large impulsive forces to be exerted between the bodies.
True
False
In mechanics, impact does not cause any changes in the momentum and velocities of the colliding bodies.
True
False
The changes in velocity caused by impact between the two colliding bodies can be characterised by the coefficient of restitution.
True
False
In tennis, balls bounce slower and higher on clay courts as contrasted to grass courts, favouring players who play with a lot of topspin. One of the reasons is due to the difference in coefficients of restitution.
True
False
Central impact occurs when the particle velocities are angled to the line of impact.
True
False
The coefficient of restitution can be formulated as:
|Relative velocity after collision| / |Relative velocity before collision|
True
False
It is normal for some kinetic energy to dissipate for collisions that happen in real-world situations.
True
False
In general, the coefficient of restitution is valued between 2 and 1.
True
False
