Meteor has a mass of 2.5 g but is moving at 50 km/s. What speed would a 900 kg car need to move to have same kinetic energy?
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The mass of a meteor with a radius of 1 km is about 9 x 1012 kg. The mass of a meteor also is proportional to the cube of its radius. Suppose a meteor with a radius of 8.8 km is moving at 1.8 x 104 m/s when it collides inelastically with the Earth. The Earth has a mass of 5.97 x 1024 kg and assume the Earth is stationary. The kinetic energy lost by the asteroid in this collision...
A shooting star is a meteoroid that burns up when it reaches Earth’s atmosphere. Many of these meteoroids are quite small. What is the kinetic energy of a meteoroid of mass 4.57 g moving at a speed of 49.1 km/s? What is the kinetic energy of a 1016-kg car moving at 28.3 m/s (63.3 mi/h)?
Question 3, thanks !
the mass move when no longer in o 3. A 1750 kg car moving to the right at 1.5 m/s collides with a 1450 kg car moving to the left at 1.1 m/s. Afterwards the heavier car is moving to the right with speed 0.25 m/s. What is the speed of the lighter car after the collision? It has a 50 g mass at the left end and a 70 g in the moment of
The current theory of the structure of the earth, called plate tectonics, tells us that the continents are in constant motion. Assume that the North America continent can be represented by a slab of rock 5500 km on a side and 29 km deep and that the rock has an average mass density of 2960 kg/m3. The continent is moving at the rate of about 5 cm/year. a) What is the mass of the continent? in Kg b) what is...
Suppose a meteor striking Earth's atmosphere came in with a velocity V and its kinetic energy went into vaporizing the meteor. If the entire meteor were vaporized, at what velocity would its destruction be assured? Assume that the heat of vaporization of the meteor is that of water, 2257 kJ/kg. Hint: Equate incoming kinetic energy to the energy needed to vaporize the meteor.
(a) How much work is done by the Moon's graviational field on a 1500 kg meteor as it comes in from outer space and impacts on the Moon's surface? 4.28785714e9 J Correct: Your answer is correct. (b) If the meteor hits the moon with a speed of 4.2 km/s, how fast was it moving in deep space?
y(t) = yg +ve+-0.5gt Meteor! y = 7,000 km 1) Show that a meteor, initially at rest (V,0 = 0) will take about 20 minutes to fall from an altitude of 7,000 km as shown in the diagram to the right. Note that the change in y is negative and you will need to convert kom into meters for the units to work out correctly. y = 0 km R= 6,371 km The calculation from problem 1) is incorrect though....
A railroad car of mass 1.85e4 kg moving at 3.14 m/s collides and
couples with two coupled railroad cars, each of the same mass as
the single car and moving in the same direction at 1.24 m/s.
b)
How much kinetic energy is lost in the collision?
USE THIS DATA:
17400 kg; 3.27 m/s; (help me see how you get the correct answer
of 2.39e4 J.
16-4 A railroad car of mass 1.85e4 kg moving at 3.14 m/s collides and...
13. Suppose a car of mass 100 kg is moving with a speed of 20 m/s. How much KE does it carry? If a truck of mass 2000 kg is moving with a same speed what is it Kinetic energy?
Part A 104-kg truck going 20 km/h? At what speed must a 950-kg subcompact car be moving to have the same kinetic energy as a 3.2 × Express your answer using two significant figures. 困? u= km/h