A125 kg seal at an amusement park slides from rest down a ramp into the pool below. the top of the ramp is 1.50 m higher than the surface of the water, and the ramp is inclined at an angle of 28.2° above the horizontal. if the seal reaches the water with a speed of 4.44 m/s, what is the work done by kinetic friction?

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

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