The initial mechanical energy is the potential energy (PE) which can be solved through the equation,
PE = mgh = (40 kg)(9.8 m/s²)(12 m) = 4,704 J
The energy at the bottom is the kinetic energy and can be calculated through the equation,
KE = 0.5mv² = (0.5)(40 kg)(10 m/s)² = 2000 J
Therefore, she lost 2,704 J of energy due to friction
Momentum refers the amount of motion that a moving object contains. It is calculated from the product of the mass and the velocity of an object. It has SI units of kg-m/s. We calculate as follows:
momentum = mass x velocity
momentum = 0.45 kg x 25 m/s
momentum = 11.25 kg-m/s
Answer:The gravitational force is defined in Uniform Circular Motion and Gravitation, electric force in Electric Charge and Electric Field, magnetic force in Magnetism, and nuclear forces in Radioactivity and Nuclear Physics. On a macroscopic scale, electromagnetism and gravity are the basis for all forces.
Explanation:
Answer:
<h3>The answer is option A</h3>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
f is the Force
m is the mass
From the question we have
We have the final answer as
<h3>0.617 m/s²</h3>
Hope this helps you
Answer:
New days begin at 180° longitude.
Explanation: