An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. The heavier fragment slides m before stopping. How far does the lighter fragment slide? Assume that both fragments have the same coefficient of kinetic friction
The distance traveled by the lighter fragment side is
One fragment is seven times as massive as the other fragment.
The distance traveled by heavier fragment,
Use the Newton's second law of motion,
Now, evaluating the velocities,
On applying conservation of momentum we have,
Squids rely on jet propulsion to move around. A kg squid (including the mass of water inside the squid) drifting at 0.40 m/s suddenly ejects kg of water to get itself moving at m/s. If drag is ignored over the small interval of time needed to expel the water (the impulse approximation), what is the water’s ejection speed relative to the squid?
A neutron is an electrically neutral subatomic particle with a mass just slightly greater than that of a proton. A free neutron is radioactive and decays after a few minutes into other subatomic particles. In one experiment, a neutron at rest was observed to decay into a proton and an electron . The proton and electron were shot out back-to-back. The proton speed was measured to be and the electron speed was . No other decay products were detected.
a. Did momentum seem to be conserved in the decay of this neutron?
b. If a neutrino was emitted in the above neutron decay, in which direction did it travel? Explain your reasoning.
c. How much momentum did this neutrino “carry away” with it?
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