Answer:
The total displacement of a dog is 100 m.
Explanation:
Given that,
A dog that runs north 80 meters to chase a ball, returns to its master, and then runs south 20 meters.
We can define the displacement as the distance between the initial position and final position of the object.
The displacement is defined as,
Put the value into the formula
Hence, The total displacement of a dog is 100 m.
Answer:
Explanation:
Given
When we drop an object from height , suppose h
it takes time T
using equation of motion
where
here because it dropped from a certain height
When height is increases to three times of original height
i.e.
then time period becomes