A6 kg mass moving at 10m/s collides with a 4 kg mass moving in the same direction at 4 m/s. After the collision both the 6 kg and 4 kg mass
continue to move in the same direction. If the 4 kg mass is moving at
10m/s, what is the speed of the 6 kg mass?

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

unbalanced force

explanation:

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