2. a car is proceeding at a speed of 14.0 m/s when it collidds with a stationary car in front of it.
during the collision, the first car moves a distance of 3.000 m as it comes tot a stop. the driver
is wearing her seat belt, so she remains in her seat during the collision. if the driver's mass is
52.0 kg, how much force does the belt exert on her during the collision? neglect any friction
between the driver and the seat.

im sorry i dont know

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