A motorcycle is traveling at a speed of 6.22 m/s when it crosses a line 12.0 m from its starting point. The motorcycle continues going with an acceleration of 1.78 m/s2 until it crosses a mark 121 m from the starting point. How long does it take for the cycle to go from the 12.0-m mark to 121-m mark

the independent variable, or the one that is intentionally manipulated is the speed.

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

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.