The correct answer is D: mass!
Answer:
Initial velocity of first cart will be 0.5 m /sec
Explanation:
We have given mass of the cart
Its collides with other cart of mass
Let the initial velocity of cart 1 is
As the car 2 is initially at rest so = 0 m/sec
After the collision velocity of first cart is 0.25 m/sec
So = 0.25 m/sec and velocity of second cart is 0.50 m /sec
So = 0.5 m/sec
From conservation of momentum we know that
= 0.5 m /sec
So initial velocity of first cart will be 0.5 m /sec
I think it's c because the first 2 it's kind of oves gills and lungs we and fish use theme to live skin i know there a animle that uses it's skin to brith i don;t rember it's name thow sorry i cant spell well but,hope this helped :)
1.) when the distance between the two objects is dubled then the gravitational Force btw them is <u>reduced by 4 times</u> I.e it becomes 1/4 of original due to the <u>inverse square law.</u>
2.) because the distance from the center of earth and pole is less then the distance btw pole and equator that's why due to <u>inverse square law</u> .
the gravitational Force on object at equator is less then the object on poles.