For the answer to the question above, we have to use this formula
Pressure = P = force / area
Then, just substitute the values of the formula
force = mg = 2(10) = 20 N
area = A = 1 cm² = [1 x 10 ̄ ²]² m²
=> P = 20 N / [1 x 10 ̄ ²]² = 200 x 10³ Pa
= 200 kPa
I hope my answer helped you. Have a nice day!
The answer is both.
For kinetic energy:
KE = 1/2*m*v^2 = 0.5*20,000 grams*5 = 50,000 J
For gravitational potential energy:
Pe = mgh = 20,000 grams*9.81 m/s^2*2 m = 392.2 J
-- If the person to whom you're explaining them is alongside you, then
you should adjust your walkiing rate to match his, so that he remains
within earshot for the duration, and receives the benefit of the complete
explanation.
-- If you're presenting the explanation on the phone, then your walking
rate doesn't matter. But you still must adjust it to avoid running out of
breath as you speak, and you must also maintain your own awareness
of your surroundings, so that your explanation is not inadvertently
truncated.
Answer: Wrestler C.
Explanation: Wrestler C has a mass of 77.6 kg. So it is the one who is highly affected by gravity.
W= mg
= 77.6 kg x 9.8 m/s²
= 760.48 N
V = whatever jar you've got it in.
