Physics
What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?

11.2 km/sec
35 km/sec
21 km/sec
18 km/sec

ANSWER DOWNLOAD EXAMIANS APP

Physics
The sensation of weightlessness in a spacecraft in an orbit is due to the

Presence of gravity outside but not inside the spacecraft
Acceleration in the orbit which is equal to the acceleration due to gravity outside
Fact that spacecraft in the orbit has no energy
Absence of gravity outside

ANSWER DOWNLOAD EXAMIANS APP