Inertial vs Non Inertial Frames

Q.

The tendency of a body to continue in its state of rest or uniform motion, even on the application of external force is called

1. force

2. momentum

3. inertia

4. impulse

Q.

Describe the state of weightlessness with the help of a suitable example.

Q.

NAME THE FOLLOWING:

The property of earth which is responsible for extremely small acceleration being produced in it due to attraction by other smaller objects.

Q. A reference frame attached to the earth
a) is an inertial frame by definition
b) can not be an inertial frame because the earth is revolving around the sun
c) is an inertial frame because Newton's laws are applicable in this frame
d) cannot be an inertial frame because the earth is rotating about its axis

1. a, b, c are correct
2. b only correct
3. b and d are correct
4. All are correct

Q. If a projectile is launched with angle $\theta$ to the horizontal inside a lift going up with acceleration a, its range is:

1. $u^{2}sin\left(2\theta \right)/g$
2. $u^{2}sin\left(2\theta \right)/(g+a)$
3. $u^{2}sin\left(2\theta \right)/a$
4. Man, this makes no sense to me.

Q.

Rajat is sitting in an open cart that moves horizontally with an acceleration of $5m/s^2$ rightwards. Rajat is unaware of his acceleration, and throws a ball up in the air. He attempts at drawing a Free Body Diagram of the ball assuming his frame to be inertial. Which of these would closely resemble his free body diagram of the ball (neglect air drag)?

1. 

2. 

3. 

4. 

Q.

Will a man in a lift in space accelerating up with an acceleration g feel any different from a man in a stationary lift on Earth?

1. He will feel heavier

2. He will feel lighter

3. He will feel no difference

4. Data insufficient