# An object is projected from the surface of the earth with a speed of 3.36x104 m/s. What is its speed

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by afshan123

u r in which class sis

incomplete question...

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by afshan123

u r in which class sis

incomplete question...

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V = 33,600 m/s = velocity of projection.

for an object to escape the gravity of Earth , the speed should be 11.2 km/sec.

so the energy spent or work done in escaping the Earth's gravitational field will be:

1/2 * m * 11,200² Joules.

Energy remaining will be: 1/2 m * 33,600² - 1/2 * m * 11,200² Joules

= 1/2 * m * (1003520000) J

the the velocity will be = √1003520000 = 31, 678.4 m/sec

for an object to escape the gravity of Earth , the speed should be 11.2 km/sec.

so the energy spent or work done in escaping the Earth's gravitational field will be:

1/2 * m * 11,200² Joules.

Energy remaining will be: 1/2 m * 33,600² - 1/2 * m * 11,200² Joules

= 1/2 * m * (1003520000) J

the the velocity will be = √1003520000 = 31, 678.4 m/sec