Rabbit's position vector (r) in the unit vector is 203.5î - 57j and the magnitude and directional angle of vector (r) are 195.35m and 0.004° respectively.
Given
x = 0.3t² + 7.2t + 28
y = 0.22t² - 9.1t +30
At t = 15s
x = 0.3(15)² + 7.2(15) +28 = 203.5
y = 0.22(15)² - 9.1(15) + 30 = -57
The rabbit's position vector (r) in unit vector notation is:
r = 203.5î - 57j
The magnitude of position vector (r)
r = √x² + y²
r = √(203.5)² - (57)² =√38163.25
= 195.35m
The directional angle of position vector (r)
tanθ = y/x = -57/203.5
θ = 
(-57/203.5)
θ = 0.004°
Hence, rabbit's position vector (r) in the unit vector is 203.5î - 57j and the magnitude and directional angle of vector (r) are 195.35m and 0.004° respectively.
Learn more about Position vector here brainly.com/question/23922381
#SPJ1
<span>Since I do not know your maximum heartrate ill give you the standard. For vigorous-intensity physical activity, a person's target heart rate should be 70 to 85% of his or her maximum heart rate.</span>
Answer:
C.food does not travel through, but provides necessary support to the digestive system
Explanation:
The primary organs of the digestive systems are the ones that food passes through, for example the esophagus, stomach, and small intestine.
The accessory organs support the function of the digestive system but food does not pass through them. Examples are the liver, gallbladder, and pancreas. They either secrete or store substances that play an important part in digestion.
Answer: The main purpose of the bladder is to store and hold urine until it's released from the body
Explanation:
The bladder is the elastic sac of connective tissue between the pelvic organs of your body. It's responsible for collecting urine from both of your kidneys, storing it, and then removing or disposing of it by making you go to the bathroom when you contract muscles that result in urination.
