<u><em>Answer:</em></u>
The answer is 1400 J, according to my Physics teacher.
<u><em>Explanation:</em></u>
You need to take into account everything that is listed in the question; it's important to remember that the question is asking about the change in gravitational potential energy of the object-object-Earth system from 0s to 10s, not 0s to 20s. :)
Answer:
Explanation:
energy stored in spring initially
= kinetic + potential energy of block + energy dissipated by friction
= 1/2 mv² + mgh + μ mgcosθ x d
m is mass , v is velocity at top position , h is vertical height , μ is coefficient of friction ,θ is angle of inclination of plane
= m (1/2 v² + gh + μ gcosθ x d )
= 1.05 ( .5 x 5.1² + 9.8 x 4.9 sin35 + .55 x 9.8 cos35 x 4.9 )
= 1.05 ( 13.005 + 27.543 + 21.635)
= 65.3 J .
Answer:
125 Joules
Explanation:
In an elastic motion, the net kinetic energy of the system is conserved i.e the total kinetic energy of the system after the collision is equal to the total kinetic energy of the system before collision;
Kinetic Energy = 1/2 m*v^2
Total Kinetic energy = Kinetic Energy(Cart 1) + Kinetic energy(Cart 2);
Total K.E = 0.5*(10)*(5)^2 + 0 = 125 Joules;
Energy after collision = Energy before collision = 125 joules
Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion.
