I need help with this essay?

Sales Essay

Bob sells goods and Mary is a potential buyer.They have a discussion that consists of the following.

Bob:Will you buy 3000 of my golf balls(goods) for $1 each?

Mary:Yes, I will.

They Bob and Mary write a contract meeting all the requirements of the statute of frauds.The contract has the following terms.

Seller: Bob

Buyer: Mary

Number of items: 3000

Price: $3000

Mary waits for the delivery of the golf balls.She waits one month and they never show up.Has Bob breached the contract?Explain why or why not.

Bob also has a contract with Phil.Bob has agreed to sell Phil 2,000 tennis balls for $650.Again, the contract is in writing as required by the statute of frauds.

Bob selects the tennis balls from his inventory and packages them for Phil.Bob ships the tennis balls to Phil.The tennis balls are stolen on the way to Phil.Is Bob required to ship Phil more tennis balls? I wantfull Explaination?