Question

A meteor whose mass was about 1.2 × 10^8 kg struck the Earth (mE = 6.0 × 10^24 kg) with a speed of about 25 km/s and came to rest in the Earth. Part A What was the Earth's recoil speed (relative to Earth at rest before the collision)? Express your answer to two significant figures and include the appropriate units. vE = 5.0 × 10^-13 m/s Part B What fraction of the meteor's kinetic energy was transformed to kinetic energy of the Earth? Express your answer using two significant figures. ?KEE / KEm = 1.1 • 10^15 Part C By how much did the Earth's kinetic energy change as a result of this collision? Express your answer to two significant figures and include the appropriate units. ?KEE = 0.78 J

          A meteor whose mass was about 1.2 × 10^8 kg struck the Earth (mE = 6.0 × 10^24 kg) with a speed of about 25 km/s and came to rest in the Earth.

Part A
What was the Earth's recoil speed (relative to Earth at rest before the collision)?
Express your answer to two significant figures and include the appropriate units.
vE = 5.0 × 10^-13 m/s

Part B
What fraction of the meteor's kinetic energy was transformed to kinetic energy of the Earth?
Express your answer using two significant figures.
?KEE / KEm = 1.1 • 10^15

Part C
By how much did the Earth's kinetic energy change as a result of this collision?
Express your answer to two significant figures and include the appropriate units.
?KEE = 0.78 J

$A meteor whose mass was about 1.2 × 10^8 kg struck the Earth (mE = 6.0 × 10^24 kg) with a speed of about 25 km/s and came to rest in the Earth. Part A What was the Earth's recoil speed (relative to Earth at rest before the collision)? Express your answer to two significant figures and include the appropriate units. vE = 5.0 × 10^-13 m/s Part B What fraction of the meteor's kinetic energy was transformed to kinetic energy of the Earth? Express your answer using two significant figures. ?KEE / KEm = 1.1 • 10^15 Part C By how much did the Earth's kinetic energy change as a result of this collision? Express your answer to two significant figures and include the appropriate units. ?KEE = 0.78 J$

Added by Daniel L.

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