Atrain slows down as it rounds a sharp horizontal turn, going from 92.0 km/h to 54.0 km/h in the 16.0 s that it takes to round the bend. the radius of the curve is 130 m. compute the acceleration at the moment the train speed reaches 54.0 km/h. assume the train continues to slow down at this time at the same rate.

Calculation of centripetal acceleration(ac):

we can change our speed in terms of m/s

now, we can plug these values

Calculation of tangential acceleration(at):

now, we can plug values

now, we can simplify it

Calculation of resultant acceleration:

now, we can plug values

.............Answer

required rate of return = 0.166 = 16.6%

step-by-step explanation:

under the capital asset pricing model (capm), the required or expected rate of return for a particular security or asset is given using the formula:

required rate of return = risk-free rate + beta*(market risk premium)

we are given that;

risk-free rate = 4% = 0.04

beta = 1.4

market risk premium = 9% = 0.09

we simply plug these values into the above formula;

required rate of return = 0.04 + 1.4*(0.09)

required rate of return = 0.04 + 0.126

required rate of return = 0.166 = 16.6%