Suppose a 1800 kg elephant is charging a hunter at a speed of 6.5 m/s. 1) Calcul

ID: 2037768 • Letter: S

Question

Suppose a 1800 kg elephant is charging a hunter at a speed of 6.5 m/s.

1) Calculate the momentum of the elephant, in kilograms meters per secon?.

2) How many times larger is the elephant's momentum that the momentum of a 0.0315kg tranquilizer dart fired at a speed of 395 m/s?

3) What is the momentum, in kilograms meters per second, of the 85kg hunter running at 5.55 m/s after missing the elephant?

Please show all work for I am very confused about how to do these types of problems. Thank you in advance for your help.

Momentum is given by:

P = mass*Velocity

P = m*V

Part A

m = mass of elephant = 1800 kg

v = speed of elephent = 6.5 m/sec

Momentum, Pe = 1800*6.5 = 11700 kg-m/sec

Part B

Momentum of dart will be

Pd = Md*Vd = 0.0315*395 = 12.44 kg-m/sec

Pe/Pd = 11700/12.44 = 940.5 times larger

Part C

Momentum of hunter

Ph = Mh*Vh

Ph = 85 kg*5.55 m/sec = 471.75 kg-m/sec

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