Two Identical Grasshoppers Jump with the Same Initial Speed

question 87

Multiple Choice

Two identical grasshoppers jump with the same initial speed.Grasshopper A goes straight up,but grasshopper B goes up at a 66° angle above the horizontal.Assume no air resistance and choose your system to be grasshopper-Earth.Which of the following statements about these grasshoppers are correct? (There could be more than one correct choice.)

• A)At their highest point, both systems have the same amount of gravitational potential energy.
• B)At their highest point, both systemshave the same amount of kinetic energy.
• C)At their highest point, both systemshave the same amount of mechanical energy.
• D)At their highest point, grasshopper B is moving faster than grasshopper A.
• E)At their highest point, the system grasshopper A-Earth has more gravitational potential energy than the system grasshopper B-Earth.

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Definitions:

Cost of Goods Available

The total inventory cost of goods that a company has available for sale at the beginning of an accounting period, including purchases made during the period.

Net Purchases

Net purchases are the total purchases made by a business after subtracting any returns, allowances, and discounts from the gross purchases.

Freight-In

The cost associated with the transportation of goods from the supplier to the buyer, typically added to the cost of purchases.

Net Sales Revenue

The total revenue from sales of goods or services after deducting returns, allowances, and discounts.