Question

Find the mass of a person walking west at a speed of 0.8 m/s with a momentum of 52.0 kg•m/s west

Answer 1

momentum = massxspeed

mass = momentum/speed

52/0.8=520/8=65kg

Answer 2

The mass of a person walking west at a speed of 0.8 m/s with a momentum of 52.0 kg•m/s west is 65 kg.

Step-by-step explanation:

The linear momentum of a particle of mass m or body m that moves with a velocity v is defined as the product of mass by velocity

P = m * v

Where, as previously stated,

• P = momentum
• m is the mass of the body
• v is the velocity.

The units in the SI (International System) are N*s (
`kg*(m)/(s)`)

Then, the mass of a person, knowing the speed and momentum, can be calculated as:

`m=(P)/(v)`

In this case=

`m=(52 kg*(m)/(s) )/(0.8 (m)/(s) )`

m= 65 kg

Then, the mass of a person walking west at a speed of 0.8 m/s with a momentum of 52.0 kg•m/s west is 65 kg.