Question

a particle has an initial velocity of 3i^+4j^ and acceleration of .4 i^ +0.3j^.Its speed after 10 s

Answer 1

so first......you need to apply formula:
a=(v-u)/t......
4i+0.3j=(v-3i-4j)/10
40i+3j=v-3i-4j
v=37i+7j......
thus the requird soeed of th particle