Question

from surface of the earth if a person can threw a ball at 90 high than how high can he threw a ball on planet whose gravitational acceleration is 9/10 of earth gravitation​

Answer 1

Answer:

Since, a weight of the person on planet A is half that on the earth, the acceleration due to gravity there will be 1/2 that on the earth. Hence he can jump

double the height with the same muscular force.

or

The potential energy of the person will remain the same on the earth and

on planet A.

Thus, mg

1

h

1

=mg

2

h

2

if g

1

=g

then g

2

=

2

1

g,

h

1

=0.4

Thus h

2

=

g

2

g

1

h

1

=

2

g

g×0.4

or h

2

=0.4×2=0.8m