potential energy because it has the ability to do work
Explanation:
A rock resting high in a cliff is an example of potential energy because it has the ability to do work. This form of energy is called potential energy.
- Energy is defined as the ability to do work. To do work, force must applied using energy to move a body through a particular distance.
- A body at rest is not doing any work. This is the case with potential energy of the body on a high cliff.
- At the state of rest, it is not doing any work.
- The potential energy of this body expresses the ability of such body to do work.
Learn more:
Potential energy brainly.com/question/10770261
#learnwithBrainly
Answer:
The force of impact, F = 17682.18 N
Explanation:
Given,
The initial velocity of the truck and associated velocity of RV, u = 2 m/s
The height of the cliff, h = 280 ft
= 85.344 m
The mass of the RV, m = 1800 Kg
The total energy of the RV at height, 'h' with velocity, 'v', E = P.E + K.E
P.E = mgh J
= 1800 x 9.8 x 85.344
= 1505468.16 J
K.E = mv²/2
= 1800 x 2² / 2
=3600 J
Therefore total energy, E = 1509068.16 J
This is equal to the kinetic energy of RV at the impact.
The force of impact,
F = E/h
= 1509068.16 J / 85.344 m
= 17682.18 N
Hence, the force of impact of RV is, F = 17682.18 N
