Assuming that the object starts at rest, we know the following values:
distance = 25m
acceleration = 9.81m/s^2 [down]
initial velocity = 0m/s
we want to find final velocity and we don't know the time it took, so we will use the kinematics equation without time in it:
Velocity final^2 = velocity initial^2 + 2 × acceleration × distance
Filling everythint in, we have:
Vf^2 = 0^2 + (2)(-9.81)(-25)
The reason why the values are negative is because they are going in the negative direction
Vf^2 = 490.5
Take the square root of that
Final velocity = 22.15m/s which is answer c
Answer: 10.5 kJ
Explanation:
In order to be able to solve this problem, you will need to know the value of water's specific heat, which is listed as
c
=
4.18
J
g
∘
C
Answer:
<h2>Rate of heat transfer from the body of the person is given as</h2><h2>
</h2>
Explanation:
As we know that the rate of heat transfer due to thermal conduction is given as
so we have
k = 0.04 W/m C
