Juniper is working on comparing and contrasting forces. She is thinking of gravitational force and strong nuclear force. Which of the following is one way these forces are alike?

A) They are both weak forces.
B) They both work only in a short range.
C) They both act on objects.
D) They are both dependent on mass.

(FLVS Physical Science 03.09)

A because they are both weak forces

Explanation:because they are weak forces

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

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