Question

2 Points

BENESS ERE
To a stationary observer, a bus moves south with a speed of 12 m/s. A man
inside walks toward the back of the bus with a speed of 0.5 m/s relative to
the bus. What is the velocity of the man according to a stationary observer?
.
PS
BE
O
A. 11.5 m/s south
SSSS
B. 12.5 m/s south
O
c. 0.5 m/s south
O
D. 11 m/s south

Answer 1

The velocity of the man according to a stationary observer, V₃₂ = 11.53 m/s

Step-by-step explanation:

Given data,

The speed of the bus to the stationary observer, V₁₂ = 12 m/s

The man walk towards the back of the bus with speed, V₃₁ = - 0.5 m/s

V₁₃ = 0.5 m/s

The velocity of the man according to a stationary observer is, V₃₂ = ?

According to the relative speed of an object,

V₁₃ = V₁₂ + V₂₃

V₂₃ = V₁₃ - V₁₂

= 0.5 - 12

= - 11.5 m/s

∴ V₃₂ = 11.53 m/s

Hence, the velocity of the man according to a stationary observer, V₃₂ = 11.53 m/s