Question

An object of mass 75 kg is floating in space. What will be its weight?

Answer 1

Answer:

The problem stands on the conservation law of momentum.

The formula is  

m

1

v

1

+

m

2

v

2

=

m

1

u

1

+

m

2

u

2

Here primary momentum is 0 as the velocity of the man with the object was 0.

So,

m

1

v

1

+

m

2

v

2

=

0

Let the mass of the astronaut is  

m

1

and the object  

m

2

and its velocity  

v

2

.

Then,  

v

1

=

−

(

24

75

×

5

)

=-0.064

The -ve shows the direction to be opposite.

Explanation:

Answer 2

Answer:

750 approximately

Explanation:

gravitational force act when we calculate it's weight