Question

A rocket ship has a mass of 1.50 x 10^5 kg. Its relativistic momentum is 3.00 x 10^12 kg•m/s. How fast is the rocket ship traveling?

Answer 1

Answer:

Explanation:

fuel consumption=40kg/s

velocity of ejection=5* 10^4m/s

thrust= fuel cons * vel of ejection

= 2*10^6N

Answer 2

Concept:

• Thrust
• Speed
• Momentum

Given:

• Mass of the rocket ship = 1.50 x 10^5 kg
• Relativistic momentum of the rocket ship = 3.00 x 10^12 kg•m/s

Find:

• The speed at which the rocket ship is travelling

Solution:

Momentum is the product of mass and velocity

p = mv

3.00 x 10^12 kg•m/s = v* 1.50 x 10^5 kg

v = 3.00 x 10^12 /1.50 x 10^5

v = 2 x 10^7 m/s

The rocket ship has been travelling at the speed 2x10^7m/s

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