Question

A cart is rolling across the floor at a constant velocity of 2 m/s to the right. The cart is pushed again to the right, and it starts to accelerate.

How are the force of the push and acceleration of the cart related?
A.
The force of gravity makes the car accelerate.
B.
The balanced push causes the cart to accelerate.
C.
The force and acceleration are not related.
D.
The unbalanced push causes the cart to accelerate.

Answer 1

@ags2658

Answer 2

You can immediately eliminate C, since Force and Acceleration ARE related. An example of their relation is:
\[F=ma\]
Since the object is moving at a CONSTANT velocity, the forces are BALANCED. Then, according to the problem, there is an EXTRA force to the right. The forces now are UNBALANCED.
When there are unbalanced forces on abject, it will always accelerate.
B can be eliminated, since this is definitely not a ''balanced'' push.
Since the object is not accelerating up or down, the force of gravity is NOT causing it to accelerate. It is still there, but it is not the cause of the cart's acceleration.
Since an unbalanced force causes an object to accelerate (as I said above), the answer is D. The unbalanced force (push) causes the cart to accelerate. ^^

Answer 3

wow big expain thx bud

Answer 4

You are welcome, buddy. I know I have guided you to the answer in other problems, but this one would be a bit hard for me to guide you through, since you might get confused. So, i explained it ALL the way down to the answer. :D

Answer 5

By the way, how many questions do you have left? It seems to me that you always have questions to do.