Physics Quiz on Inertia and Forces

Inertia is related to the mass of an object. How does this affect how easy it might be to move the object?

• Objects with less mass have more inertia and are harder to move.

• Inertia is not related to the mass of an object.

• Objects with more mass have more inertia and are harder to move.

• Objects with more mass have less inertia and are easier to move.

Tags

NGSS.MS-PS2-2

Mass is a measure of an object's inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia.

• true

• false

Tags

NGSS.MS-PS2-2

Imagine a pile of books on a table. They are not stacked evenly so that the corners are pointing in all directions. You try to pull one of the books out of the stack from near the bottom. The stack begins to fall over. Determine if the forces are balanced or unbalanced as you pull on the book.

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-2

The net force on an object must be unbalanced in order for the object to move.

• False

• True

Tags

NGSS.MS-PS2-2

Friction can cause unbalanced forces to become balanced.

• False

• True

The motion of an object can remain the same when there are forces acting upon it. Which of the following explains this phenomenon?

• The forces are unbalanced.

• The forces are balanced.

• The object is at rest.

• The object is in a vacuum.

If an object is stationary (not moving) the forces acting upon it are _____________

• unbalanced

• Hulk Smash!

• balanced

• weak

If you have balanced forces on a ball what happens

• It stays still

• Keeps going

• Moves faster

• Changes direction

What do the arrows in a force diagram represent?

• The arrows indicate the speed of the object.

• The arrows show the temperature around the object.

• The arrows are decorative and have no significance.

• The arrows represent forces; their length indicates magnitude and direction indicates the direction of the force.

Which boy will have an easier time getting down the hill?

• Boy A, because he is experiencing less friction than boy B.

• Boy B, because he is experiencing more friction than boy A.

• Boy A, because he is moving faster than boy B.

• Boy B, because he is moving slower than boy A.

Tags

NGSS.MS-PS3-1