Question

A partical nitial velocity 3i+4j and has 0.4i+0.3j

Answer 1

Let’s solve this using an equation of motion called v=u+at

u=3i+4j

a=0.3j+0.4i

t=10

v=4j+3i+10(0.3j+0.4i)

v=7i+7j

|v|={2(49)}^1/2

|v|=7(2^1/2)