Question

A car travelling north at 20m/s turns and then travels south at 20m/s. The change in its velocity is

Answer 1

Answer:

there was a change of 40 m/s of velocity

Explanation:

A.T.Q.

Initial Velocity, u : 20 m/s

Final Velocity, v : - 20 m/s ( the minus sign implies that the object is moving in opposite direction)

Now, the change in velocity :

u-v = 20 + 20 m/s = 40 m/s

Answer 2

Answer:

the velocity will be 0

Explanation:

velocity= final velocity- initial velocity / time taken

velocity = 20-20/time

velocity = 0/time

anything divided by 0 is 0

so , velocity=0