Find the force of gravity between a newborn baby (mass = 2.9 kg ) and planet Mars (mass = 6.4×1023kg) when Mars is at its closest to Earth (distance = 5.6×1010m ).

The force of gravity between the newborn baby and Mars is

Explanation:

The universal law of gravitation is defined as:

(1)

Where G is the gravitational constant, m1 and m2 are the masses of the two objects and r is the distance between them.

Since the newborn baby is at the Earth, it will be at a distance (r) of from Mars.

Therefore, equation 1 can be used:

Hence, the force of gravity between the newborn baby and Mars is .

heats surface water up