Awatermelon seed has the following coordinates: x = -7.3 m, y = 4.1 m, and z = 0 m. find its position vector as (a) a magnitude and (b) an angle relative to the positive direction of the x axis. if the seed is moved to the xyz coordinates (3.4 m, 0 m, 0 m), what is its displacement as (c) a magnitude and (d) an angle relative to the positive direction of the x axis? put the angles in the range (-180°, 180°].

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the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

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