10,000 meters: 1,000 meters in every kilometer.
Answer:
Explanation:
Given
mass of archer
Average force
extension in arrow
Work done to stretch the bow with arrow
This work done is converted into kinetic Energy of arrow
where v= velocity of arrow
(b)if arrow is thrown vertically upward then this energy is converted to Potential energy
20N•m or 20J. Work is equal to force•distance, and 5N•4m is 20N•m, or J
Answer:
Twice
Explanation:
From the formula for velocity in a circle
V= 2πr/T
Where V is velocity
r is raduis
T is period
We see that as r increases V increases so if r is doubled V becomes doubled