Answer:
The newton (lowercase n!) is a derived unit because its definition consists of multiplication of three defined base units and nothing else. Its meaning is thus derived, not independently defined.
Answer:

Explanation:
The time the stone takes to fall can be calculated considering only the vertical component with the formula:

Taking the inital height as 0m and downward direction positive, since it departs from (vertical) rest we have:

Which gives us a time:

Horizontally, on that time the stone travelled a distance x=10m, which means its horizontal speed was:

Since <u>this speed is the tangential velocity</u> while whirling, the centripetal acceleration of the stone was:

Answer:-The formula of to calculate KE = 1/2 m v^2
so we,
KE = 1/2 (450kg)(23m/s)^2
KE = 1/2 ×238050
KE = 119025
Explanation: In Physics Formulas mean everything.