Question

[PLEASE ANSWER FAST. ITS URGENT. TOMORROW IS MY EXAM]
pls...plz.....plz.....

Answer 1

(NOTE: In the answer you will find ✔, which means square root.)

W=F×s cos

=30×20×(✔3/2)

=30×10×✔3

=300×1.732

=519.6 J