While standing on the roof of a building, a child tosses a tennis ball with an initial speed of 12 m/s at an angle of 15° below the horizontal. the ball lands on the ground 2.6 s later. how tall, in meters, is the building?

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27