A quantum particle a. can be localized in space.

b. can be represented by an infinitely long wave having a single frequency.

c. can be represented by a wave packet.

d. travels at the phase speed of the infinitely long wave having the highest frequency.

e. has the highest probability of being present in those regions of space where its component waves interfere destructively.

Option C.

can be represented by a wave packet.

Explanation:

Quantum particles are particles that are located in a single place having wave like properties and discrete or wave packets energy. Quantum particles have specific amount of energy and are represented by wave packet because they have wave like properties or they act like waves.

A wave packets is an envelope that consist of super imposed waves that travels and form localised disturbances having a well defined wave position and momentum.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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