Question

plz friends give answers fastìh​

Answer 1

Answer:

Rocket works on the principle of conservation of linear momentum.......

Answer 2

21.

Given:

• Acceleration(a) = 5m/s²

• Force (f) =250 N

To Find:

• Mass of a body (m) =?

Solution:

Since,

Force = mass × acceleration

: . 250 N= mass× 5m/s

: . mass =250/5

:. mass=50 kg......... (Newton=kg m/s²)

Therefore, Body of 50 kg mass can attain an acceleration of 5m/s²under a force of 250 N.

22.)

Rocket works on the principle of conservative of linear momentum.