cbbentonam72
03.07.2019 •
Physics
Arobot car drives off a cliff that is 11 meters above the water below. the car leaves the cliff horizontally with some initial speed and travels down to the water. the car hits the water a distance of 15 meters from the base of the cliff (it has no air resistance as it falls). what was the driving speed of the car? g =< 0,-9.8,0> n/kg.
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Ответ:
Driving speed of the car = 10 m/s
Explanation:
The car hits the water a distance of 15 meters from the base of the cliff.
Horizontal displacement = 11 m
A robot car drives off a cliff that is 11 meters above the water below.
Vertical displacement = 11 m
We have
s = ut + 0.5 at²
11 = 0 x t + 0.5 x 9.81 x t²
t = 1.50 s
So the car moves 15 meters in 1.50 seconds.
Velocity
Driving speed of the car = 10 m/s
Ответ:
A dog is a multicellular organism. It obtains energy from the food it eats and uses this energy to perform its vital life functions. A dog eliminates waste through panting, feces, urine, and respiration. It has a definite boundary, as its inner organs are covered by skin and fur. A dog regulates homeostasis in different ways. One way is by panting, which helps the dog maintain a stable internal temperature. Like humans, a dog has a complex organ system that grows and develops throughout its entire life. A dog reproduces and passes on genetic information to its puppies. It also senses and responds to stimuli. For example, a dog has a very astute sense of smell, and its mouth waters when it smells food.