[SOLVED] Find the direction and magnitude of the owner’s velocity?

Find the direction and magnitude of the owner’s velocity?

A 29.0kg dog is running northward at 2.15m/s , while a 7.25kg cat is running eastward at 3.57m/s . Their 75.4kg owner has the same momentum as the two pets taken together.

Find the direction and magnitude of the owner’s velocity.

Answer:

This is the best answer for Find the direction and magnitude of the owner’s velocity?

P1 = momentum of dog = 29*2.15 = 62.35 Ns

P2 = momentum of cat = 7.25 * 3.57= 25.8825 Ns

Resultant P = sqrt(P1² + P2 ²) = 67.50 Direction = Tan⁻¹ (P1/P2) = 67.45° with east

Owner’s velocity = P/m owner = 67.50/74=0.9122 m/s , Direction 67.45 °with west

i.e opposite to P

So, we have..

P(dog) = 29.0 * 2.15 = 62.35 kg m/s

P(cat) = 7.25 * 3.57 = 25.88 kg m/s

P(owner) = 75.4 v = 62.35 + 25.88

v = 1.17 m/s

The direction is

arc tan (2.15 / 3.57) = 31 degrees north of east.

This is the correct answer for A 29.0kg dog is running northward at 2.15m/s , while a 7.25kg cat is running eastward at 3.57m/s . Their 75.4kg owner has the same momentum as the two pets taken together.

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