Question

An object of mass 5kg and 10kg are moving with 5m/s and 10m/s respectively in opposite direction what will be their combined final velocity​

Answer 1

Answer:

so...

the combined velocity with which it would go.... would be we would be calculating this value by using the law of conservation of momentum

as the total momentum before the impact and after the impact has to remain constant

so total momentum before the impact it is

5 X 5 + 10 X 10 =25+100=125

so the total momentum before the impact is 125

so now the total momentum after the impact is.....

(5+10)*v=125

15v=125

so v which is the combined velocity would be

125/15=8.3333

that's your answer hope it helps

pls mark as brainlist

Answer 2

Their combined velocity will be 8.33 m/s.

Solution :-

Given that an object of mass 5kg and 10kg are moving with 5m/s and 10m/s respectively in opposite direction.

We have to find the combined final velocity.

Now we have ;

→ Mass of first object (m₁) = 5 kg

→ Initial velocity of first object (u₁) = 5 m/s

→ Mass of second object (m₂) = 10 kg

→ Initial velocity of second object (u₂) = 10 m/s

Now as both object will combine. So final velocity of both objects will be same i.e. v₁ = v₂ = v

Now applying law of conservation of momentum :

→ m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

→ 5 × 5 + 10 × 10 = v(5 + 10)

→ 25 + 100 = 15v

→ 125 = 15v

→ v = 125/15

→ v = 8.33 m/s

Hence,

Their combined final velocity = 8.33 m/s