Biking at 10 mph, it takes Kristen hour to reach the train station to go to work. Kristen then takes the train to work, and it t
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Answer:
Step-by-step explanation:
Given that the position vector of a moving body at time t is
Velocity is the derivative of acceleration
v(t) = , t positive
Speed would be the magnitude of the velocity and will not have direction
Speed =
Acceleration of the object
a(t) = derivative of velocity of vector
=
i.e. acceleration would be in the direction of x axis alone.