Answer:
Car A has twice the energy of car B.
Explanation:
The kinetic energy of an object is given by :
Where
m is the mass
v is the speed of the object
Car A has twice the mass of Car B. Both travel at the same speed i.e.
So,
So, the kinetic energy of car A is twice of the kinetic energy of car B.
A wedge is a simple machine that is used to cut or split an object.
Hope I helped!
A. The potential energy is always the highest at the top and the kinetic energy is always the lowest at the top.
Because alpha particles are positive charged. And they bounce back because of the electromagnetic force between them and the gold foils protons.