Final answer:
The tennis ball flew 66 feet during Lenore's second test, which is 6 feet more than the target distance of 60 feet. The correct answer is option C.
Step-by-step explanation:
The student's question is about determining how far Lenore's tennis ball flew during the second test of her science project launcher. In her first test, she marked the result as -4 because the ball flew 4 feet less than the desired distance of 60 feet, meaning it traveled 56 feet. During the second test, she marked the result as +6, which indicates the ball flew 6 feet more than the desired 60 feet. Therefore, during the second test, the tennis ball flew a total of 66 feet, which corresponds to option C.
Projectile refers to an object that is in flight after being thrown or projected. In a projectile motion, the only acceleration acting is in the vertical direction which is acceleration due to gravity (g). Equations of motion, therefore, can be applied separately in X-axis and Y-axis to find the unknown parameters.
The equation for the distance traveled by a projectile being affected by gravity is sin(2θ)v2/g, where θ is the angle, v is the initial velocity and g is acceleration due to gravity.