Answer:
<em>t = 1.875 hours</em>
Explanation:
<u>Speed</u>
The speed is the rate at which an object moves. If the speed is constant, then the formula to calculate it is:
Where d is the distance traveled in time t.
The jogger runs 6 Km plus 5 Km plus 4 Km north for a total of 15 Km.
It's given her average speed is 8 Km/h. We can calculate the time take to complete the run by solving the above formula for t:
t = 1.875 hours
Answer:
Explanation:
Let
h = height of balloon (in feet).
θ = angle made with line of sight and ground (in radians).
h = 300 tanθ
now can be written as
When θ = π/4,
Answer:
Part a)
Part b)
Explanation:
Let say the extension of spring 1 is x1 and extension of spring 2 is x2
then we will have
so we will have
for other spring we will have
so total extension of both the springs is given as
Part b)
Let say the effective spring constant is k
so we will have
GPE is given by the formula mg∆h or mass x gravity x height
Gravity is a constant (9.81) so the total GPE is going to depend on the mass of the object and its height above the ground.