Question

A car moves along north with speed of 50 m/s then it takes
a right turn and moves with 50 m/s along south. Find change
in speed and change in velocity.
ample - 6
Find the magnitude of unknown forces (F, & Fy) if object
1
1:1​

Answer 1

Answer:

Initial velocity = v

i

=50j

FInal velocity =v

f

=−50i

Change in velocity = Δv=v

f

−v

i

=−50i−50j

Negative x- means west direction and negative y-component means south direction. Hence resultant velocity is in south-west direction.

Magnitude of change in velocity =

(−50

2

)+(−50

2

))

= 70. 71 km/h