Balanced And Unbalanced Forces Question Preview (ID: 46101)
Balanced And Unbalanced Forces.
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Your teacher was given an apple by a student trying to get on her good side. It sits on her desk the whole year, not moving. You know that, if the apple were to roll off the desk, it would fall to the ground. So what is keeping the apple motionless
a) Once placed on the desk, gravity is no longer acting on the apple.
b) The downward force of gravity on the apple is balanced by a larger force on the apple by the desk.
c) The downward force of gravity on the apple is balanced by an equal but opposite force on the apple by the desk.
d) The downward force of gravity on the apple is balanced by an equal but opposite force on the apple by the teacher.
Two students stand on opposite sides of a large 10-pound wooden box and push against it toward one another. Jose pushes with 20 pounds of force and Gina pushes with 15 pounds of force. Which best describes what will happen?
a) The box will not move.
b) The box will move toward Gina.
c) The box will move toward Jose.
d) The box will lift off the ground.
A force pushes on a block with to the right with 10 N and another pushes to the left with 20 N. The block should be moving in which direction?
a) The block should not move at all.
b) The block should move to the left.
c) The block should move to the right.
d) There is no way to tell which way the block should move.
An object in motion will stay in motion unless acted upon by what type of force?
a) balanced
b) electrical
c) magnetic
d) unbalanced
A soccer ball is rolling past Ramon. He kicks it in the same direction that it is rolling. What will MOST LIKELY happen?
a) The ball will speed up.
b) The ball will slow down.
c) The ball will change direction.
d) The ball will continue moving at the same speed.
Which example best represents an object with balanced forces acting upon it?
a) A boat moving through the water.
b) A book sitting on a high shelf.
c) A wagon rolling down a steep hill.
d) A baseball thrown in the air.
Net force is the total of all forces acting on an object. When a force is balanced and the object does not move, the net force is equal to what:
a) 0
b) 10
c) 100
d) The weight of the object
Jim is rearranging his apartment and needs to move his entertainment center. If the gravity exerts 15 N and there is 10 N of friction, how much force will Jim need to exert to move it?
a) 10 N
b) 15 N
c) 25 N
d) 30 N
Forces that are equal in strength and opposite in direction are
a) balanced forces.
b) unbalanced forces.
c) always result in motion.
d) always the result of motion.
One man pushes a cart to the right with 75 N of force. Another pushes on the cart to the right with 50 N of force. What can we say is true about the affect of the forces on the cart?
a) It cannot be determined without knowing which man is stronger.
b) It cannot be determined because one man is taller than the other.
c) The forces are unbalanced, and net force on the cart moves it to the left.
d) The forces are unbalanced, and net force on the cart moves it to the right.
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