2 obects each of mass 1.5 kg are moving in the same straight line but in opposite directions . The velocity of each object is 25 m/s before the collision during which they stick together . What will be the velocity of the combined object after collision ?
Answers
★ Answer ★
0 ms⁻¹
★ Step by step explanation ★
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★ Given :
Two object of mass = 1.5 Kg
So,
m₁ = 1.5 kg (first mass)
m₂ = 1.5 kg (second mass)
Velocity (speed) of each
object is = 2.5 m/s
So,
u₁ = 2.5 m\s
u₂ = -2.5 m\s
============================
★ To find :
Velocity of combined object
after collision.
===========================
Here we use formula
★ m₁u₁ + m₂u₂ = (m₁ + m₂) v ★
==========================
So,
According to the given problem
⇒ 1.5 × 2.5 + 1.5 × (-2.5) = (1.5 + 1.5) v
⇒ 3.75 + (-3.75) = (3) v
⇒ 0 = (3) v
⇒ 0/3 = v
⇒ v = 0 ms⁻¹
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★ So, we can say that when both
objects are combined after collision then
their velocity (speed) is " 0 ms⁻¹ ".