Answer:
<em>The gravitational potential energy of the parachutist is 3,528,000 J</em>
Explanation:
<u>Gravitational Potential Energy </u>
It's the energy stored in an object because of its height in a gravitational field.
It can be calculated with the equation:
U=m.g.h
Where:
m = mass of the object
h = height with respect to a fixed reference
g = acceleration of gravity, usually taken as .
The parachutist has a mass of m=120 kg and he jumps at a height of h= 3,000 m. Computing the gravitational potential energy:
U = 120 * 3,000 * 9.8
U = 3,528,000 J
The gravitational potential energy of the parachutist is 3,528,000 J
Answer:
Explanation:
ΣF=ma
The two forces at play are the force applied and the force due to friction. As they are opposing forces set the direction being pushed as the positive in the x direction. the equation you come out with is 60 - 15=(15)A (we know mass to be 15kg). Solve for 3 m/s^2.