When a sprinter bursts from the starting blocks, he/she generates considerable forward momentum. Is this an example where momentum is not conserved?
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World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has a magnitude of 15m/s2.
How much horizontal force must a sprinter of mass 48.0kg exert on the starting blocks to produce this acceleration?
Which body exerts the force that propels the sprinter, the blocks or the sprinter?
In fig. 8.11, determine the character of the collision. Themasses of the blocks, and the velocities before and after aregiven. The collision is:
A) completely inelastic
B) partially inelastic
C) perfectly elastic
D) characterized by an increase in kinetic energy
E) not possible because momentum is not conserved.
Momentum for a system can be conserved in one direction while not being conserved in another. What is the angle between the directions? Given an example.