Answer:
0.48 s
Explanation:
The vertical position of the ball at time t is given by:
where
h = 3 m is the initial height
u = 0.4 m/s is the initial velocity
g = 24.5 m/s^2 is the acceleration of gravity on the surface of Jupiter
The negative signs are due to the fact that the direction of the initial velocity and of the acceleration are downward
The ball reaches the surface at time t such that y(t)=0, so:
Substituting values,
Solving the second-order equation, we find:
which gives two solutions:
t = 0.48 s
t = -0.51 s
We discard the second one since it is negative, so the ball reaches the surface after 0.48 s.
The first statement is true, because the US worker can produce 10 more caps in the same amount of time as the French worker, the US has a comparative advantage when making caps.
Answer:
the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
Explanation:
it is the definition
Answer:
here w means work done as we can see that it is the formula for work done where f is force and d is distance travelled. Hope it helped :-)
Explanation: