Answer:
D. 30m/s
Explanation:
According to the equation of motion
v=u +at
v = Final velocity
u = initial velocity
a = acceleration
t = time taken
Since we don't know the acceleration of the body, we will find its acceleration using newtons first law of motion F = ma
10000 =2000a
a = 5m/s²
initial velocity = 0m/s since the body starts from rest
v is what we are looking for
t = 6seconds
Substituting this datas in the formula
v = 0+ 5(6)
v = 30m/s (D)
You can look up the def I think
6050 J is the kinetic energy at D
<u>Explanation:</u>
In physics, the object's kinetic energy (K.E) defined as the energy it possesses during movement. It can be defined as the required work to accelerate a certain body weight in order to rest at a certain speed. When the body receives this energy as it speeds up (accelerates), it retains this energy unless speed varies. The equation is given as,
Where,
m - mass of an object
v - velocity of the object
Here,
Given data:
m = 100 kg
v = 11 m/s
By substituting the given values in the above equation, we get
Answer.
Charged spheres attract each other when: They are oppositely charged
Explanation
Like charges do not attract to one another, rather they repeal. However, recent research in physics and mathematics has shown the opposite in that at particular distances two spheres that have similar charge can possibly attract each other. Using the method of image technique to solve this problem, equal charges may attract only possible if the force of gravity between the two charged bodies is way more than the electrostatic force of repulsion. This is to mean that equal charged spheres may attract if charge by mass ratio of the bodies charged is tending to zero.
