The unconscious man the avalanche rescue dog dragged is now put inside an ambulance. If the ambulance was initially at rest and then accelerated until it's kinetic energy was 5.4×10⁵ J, how much work did the ambulance's engine perform? W=delta(K)

The best answer i can think of is b

Perhaps seek some professional ? it isn't very asking some children who are just trying to find out answers to homework.also, it seems professional would actually be good to you. obviously it isn't going to magically fix your depression, but it'll do something. drugs, smoking weed, it won't do much, especially if your husband is against it. if you do it he'll dislike it. but talk to him, try and get him to listen to you, and figure everything out together, okay? there's a website- maybe it can offer some ?

D.) a wheel barrow, due to the fact that where the weight is in the middle, the fulcrum is at the wheel, and the input force is at the other end