What happens to the gravitational force between two object if the mass of the objects stay the same but distance decreases?

Explanation:

[ file ] Where , G is universal gravitational constant

m1 and m2 masses of object 1 and 2 respectively !!

r , is distance between the two object !!

:- If we decrease the distance between them the effect on Gravitational force will be : it increases due to the inverse proportionality between the gravitational force ( Fg ) and distance between object ( r² ) ..

..... Even it is inversely proportional to the square of the distance between object , the force will increase suddenly for a small change in r !!

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

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y