An aircraft is moving with a uniform velocity of $150 \ m/s$ in space. If all forces acting on it are balanced,then it will

When a body is at rest or in uniform motion,no force acts on it. Is this statement true or false?

$A$ person is sitting in a travelling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

$A$ stone tied to a string is rotated in a circle. If the string is cut,the stone flies away from the circle because

An astronaut accidentally gets separated from his small spaceship accelerating in interstellar space at a constant rate of $100 \; m/s^2$. What is the acceleration of the astronaut the instant after he is outside the spaceship (in $; m/s^2$)? (Assume that there are no nearby stars to exert gravitational force on him.)

Write and explain Newton's first law of motion.