Answer:
it is accepted all over the world
it is more reliable than other kinds of measuring system
The block gains gravitational potential energy as it gets higher,
and that's the energy that the motor has to supply.
The amount of potential energy gained by the block is
(mass) x (gravity) x (height)
= (2.0 kg) x (9.8 m/s²) x (15 m)
= (2 x 9.8 x 15) kg-m²/s² = 294 joules.
Power = (change in energy) / (time for the change)
= (294 joules) / (6 sec)
= 49 joules/second = 49 watts .
Answer:
The hurricanes in North America generally move northwestward
im pretty sure it was tennis
