Question

1. what is the momentum of a man of mass
7OKg
, when are walks with a wiform velocity of
2 m/s​

Answer 1

Solution :

• mass of man = 70kg
• velocity = 2m/s

Momentum = mass × velocity

• p = mv

where

p = momentum

m = mass

v = velocity

p = 70 × 2

p = 140 kgm/s

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Answer 2

Correct Question :

›»› What is the momentum of a man of mass 70 kg, when he walks with a uniform velocity of 2 m/s.

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Answer :

›»› The momentum of a man = 140 km-m/s

Given :

• Mass of a man = 70 kg
• Uniform velocity of a man = 2 m/s

To Find :

• Momentum of a man = ?

Required Solution :

Before we start our solution let's first we know about Momentum$.$

Momentum :

Product of the mass of a particle amd it's velocity.

• Momentum is a vector quantity.
• The SI unit of Momentum is kg-m/s.
• Momentum is represented by p.
• Momentum is equal to the product of mass and velocity.

So let's start our solution...

We can find Momentum of a man by using the formula of Momentum which says p = mv.

Here,

• p is the Momentum in kg-m/s
• m is the mass in kg.
• v is the velocity in m/s.

So let's find Momentum (p) !

As we know that

⇛ p = mv

⇛ p = 70 × 2

⇛ p = 140 kg-m/s

║Hence, the Momentum of a man is 140 kg-m/s.║