HW13( Linear momentum) Begin Date: 10/20/2017 12:00:00 AM-Due Date: 10/30/2017 1

Question

HW13( Linear momentum) Begin Date: 10/20/2017 12:00:00 AM-Due Date: 10/30/2017 11:59:00 PM End Date: 12/14/2017 12:00:00 AM (1096) Problem 1: Suppose a large ship has a momentum of 1.4 × 109 kg·m/s. 50% Part (a) What is the mass of the large ship, in kilograms, when the ship is moving at a speed of47 kmh? Grade Summary Deductions Potential 100% 09% sin0 cos0 tan() | |( Submissions Attempts remaning 2% per attempt) cotanasing acos atan) acotan) sinh0 cosh) tanh) cotanh) Degrees O Radians tailed view 0. Submit Hint I give up Hints: -deduction per hat Hints remaining 2 Feedback: 0% deduction per feedback 50% Part (b) How much larger is the ship's momentum than the momentum of a 1050 kg artillery shell fired at a speed of 370 ms?

Explanation / Answer

a)

p=mv

m=p/v

m=(1.4*10^9kg*m/s)/(47000m/3600s)

m=1.07*10^8 kg

b)

Pshell= Mshell*vshell

Pshell = (1050kg)*(370m/s)

Pshell = 3.88*10^5 kg*m/s

Pship/Pshell= (1.4*10^9)/(3.88*10^5)

Pship/Pshell= 3608.23

Pship=3608.23*Pshell

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