Matt and Kim use bowling balls with different masses. If they both roll their bowling balls at exactly the same speed, which claim could be supported by the evidence? * A) The bowling ball with less mass has more kinetic energy.
B) The bowling ball with more mass has more kinetic energy.
C) The kinetic energies of the two bowling balls are the same.
D) There is not enough information to compare the kinetic energies

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

490 n

f=125n a=2.5m/s2