Forces and Momentum IPS

Inertia refers to _____

• the natural tendency that objects have to resist changing their motion (stubborness).

• the force which keeps moving objects in motion with a constant velocity.

• the force that keeps stationary objects at rest.

• the natural tendency that objects have to be attracted to other objects (loneliness).

Inertia depends on ______

• Velocity

• Speed

• Distance

• Mass

Tags

NGSS.MS-PS2-2

A skateboard rolls down a hill, reaches the level surface and eventually comes to a stop. The fact that the skateboard ultimately stops is best explained by...

• the natural tendency of the skateboard to seek a resting place.

• the presence of friction which acts on the skateboard to make it stop.

• the presence of inertia causes it to stop.

• fake news... the skateboard will not stop!.

Tags

NGSS.MS-PS2-2

Mac and Tosh are arguing in the cafeteria.

Mac says that if he flings the jello with a greater speed it will have a greater inertia.

Tosh argues that inertia does NOT depend upon speed, but rather upon mass.

Classically speaking, who is correct?

• Mac

• Tosh

• Neither

• Both

An astronaut is in a spaceship far far away at a location where effects of gravity and friction are too small to be noticed. If the astronaut's spaceship turns off its engines, then...

• the spaceship will continue in motion with the same speed and direction.

• the spaceship will eventually stop as its inertia slowly becomes used up.

• the spaceship will speed up in the direction it was going as the spaceship loses its resistance.

Tags

NGSS.MS-PS2-2

You are riding on a school bus and suddenly get thrown forward. What did the bus just do?

• The bus makes a hard turn to the right.

• The bus is going forward and suddenly stops.

• The bus starts moving forward

• The bus makes a hard turn to the left.

Tags

NGSS.MS-PS2-2

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Tags

NGSS.HS-PS2-2

Which one of the following is needed to change an object's motion?

• a particular frame of reference

• inertia

• a momentum

• a force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which statement is true because of Newton's second law? F = ma.

• When the force on an object increases, the object's acceleration decreases.

• When the force on an object increases, the object's acceleration increases.

• When the force on an object decreases, the acceleration doesn't change.

• When the force on an object decreases, the object's acceleration increases.

Tags

NGSS.MS-PS2-2

If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1