Answer:
For adults, get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week
Analyzing two-dimensional projectile motion is done by breaking it into two motions: along the horizontal and vertical axes.
hope it helps!!
When the box IS on the shelf 2m above the ground,
its potential energy is
(weight) x (height) = (3 N) x (2 m) = 6 joules .
THAT's the work you have to do, to lift the box up to there.
Answer:
A frictional force of 10N on the opposite direction can be used to balance the given force.
Explanation:
The net force is the sum of all forces acting on the object in different directions (x,y):
(1)
Where
represents the net force, m is the mass and a is the acceleration.
(2)
is the sum of the forces that are in the x direction, for this particular case
has to be equal to zero to be balanced.


So a force with the same magnitude but opposite direction is needed (-x).
Hence, a frictional force of 10N in the opposite direction can be used to balance the given force.