Question

A truck travelling due north at 20m/s turns east and travells at the same speed. What is the change in velocity ?​

Answer 1

Answer:

20√2 m/s

Step-by-step explanation:

v-u=√v²+u²-2vucos(theta)

theta=90°

therefore cos(theta)=0

v-u=√20²+20²

=√800

=20√2 m/s