This question is a little ambiguous because it can be a question of 1) volume IF you know how deep the square yard of mulch is. Even up to one yard (3 feet) deep will definitely fit.
2) area IF you want to cover up exactly one square yard of truckbed, which seems like it has very limited potentials. Provided you do not have some sort of huge toolbox taking up floorspace, you will definitely be able to do this as well.
Either way, the short answer is YES.
It depends on the price of the mulch.
It depends on how thick the mulch is applied. For example, if applied at an average depth of two inches, the cubic yard of mulch will cover 162 square feet. If applied at an average depth of four inches, half that area or 81 square feet, etc.
9
One cubic yard of mulch will cover approximately 160 square feet at a depth of 2". This rule also applies to hardwood bark mulch, hardwood bark fines, and double and tripled shredded mulch varieties.
One cubic yard will cover a 324 square-foot area with one inch of mulch. However your mulch should be 2 to 3 inches thick to maintain moisture and prevent weed growth. Be careful not to go to thick or you will cause mold to form in the mulch.
To solve this convert all measurement to a yard or square yard basis: 3 inches is 0.083333333333 yard and 1500 square feet = 1500/9 = 166.6666666666667 square yards Thus the amount of mulch you need is 166.6666666666667*0.083333333333= 13.88888888883333 cubic yards. so you need to purchase 14 cubic yards of mulch for the job.
Well 1 sq yard of much will cover 325 square ft or so. That is if you have the mulch 1" High. Its recommended to be 1"-1.5" But your probably not going to get it exact at 1" High of mulch so id go with 300 sq ft.
3
If the mulch is spread 4 inches thick, it will cover 81 square feet. 1 yard = 27 ft3 4 in = (1/3) ft 27 ft3 / (1/3) ft = 81 ft2
The area covered by one cubic yard of Mulch is dependant on the depth that themulch is applied. At 3" it covers 108 ft2, at one inch it covers over 300 ft2.The 'square feet' of area that it covers is 324/(depth of the mulch, in inches)
162 sq.ft.
5inches