Acceleration Due to Gravity

For a particle projected upwards is $20 m/s$, match the following$(g = 10 m/s^2)$.

        Table 1                                                                                                                             Table 2
1. Distance travelled in 1 st sec.                                                                                       P. 5 m
2. Distance travelled in 2nd sec.                                                                                      Q. 15 m
3. Distance travelled in 3rd sec.                                                                                      R. 20 m
4. Distance travelled in 4th sec.                                                                                     S. 0 m
Choose the appropriate match

Average density of the earth.

If both the mass and radius of the earth, each decrease by $50\%$, the acceleration due to gravity would-

The acceleration due to gravity on the planet is $1.96 m{s}^{-1}$. If it is safe to jump from a height of $4 m$ on the earth, then the corresponding height on the planet will be-

The gravitational intensity in the force experienced by a unit mass at a point in the gravitational field is denoted by-

The force experienced by a unit mass at a point in the gravitational field is called its-

The space in which body experience a force by virtue of its mass is called.

A person stands on a weighing machine kept on the floor of an elevator. When the elevator is at rest then the apparent weight of the person, If the elevator moves down with a constant acceleration, the apparent weight of the person is-

Newton's law of gravitation

The maximum weight of a body is

An iron sphere of mass $10 \mathrm{k}\mathrm{g}$ has the same diameter as an aluminum sphere of mass $3.5 \mathrm{k}\mathrm{g}$. Both the spheres are dropped simultaneously from a tower. When they are $10 \mathrm{m}$ above the ground, they have the same: