The escape velocity from the Earth is:
A11.2 km/s
B7.8 km/s
C11.2 km/h
D7.8 km/h
Answer:
A. 11.2 km/s
Read Explanation:
The escape velocity from the Earth is the minimum speed an object must have to escape the Earth's gravitational pull.
Calculation:
The escape velocity (v) can be calculated using the formula:
v = √(2 G M / r)
where:
G is the gravitational constant (6.67408e-11 N*m²/kg²)
M is the mass of the Earth (5.97237e24 kg)
r is the radius of the Earth (6.371e6 m)
Value:
Plugging in the values, we get:
v ≈ √(2 6.67408e-11 5.97237e24 / 6.371e6)
≈ 11.2 km/s