Forces & Motion: L2/L3

Match the following

• unbalanced forces

• Forces that do not cancel each other out when acting together on a single object

• momentum

• When all of the forces on an object cancel each other out

• weight

• The strength or force that something has when it is moving, due to its mass and velocity.

• balanced forces

• This force always pulls objects towards the center of the earth.

• gravity

• A measure of how much gravity exists between the earth and an object

Tags

NGSS.MS-PS2-4

Match the following

• Newton's Second Law

• states that an object at rest will stay at rest, and an object in motion will stay in motion, unless an outside force acts on it.

• Newton's First Law

• states that for every action, there is an equal and opposite reaction.

• Newton's Third Law

• states that the acceleration of an object is related to the mass of the object and the force applied to it.

Tags

NGSS.MS-PS2-1

The equation that correctly expresses Newton's 2nd law is:

• force=mass-acceleration
• force=mass/acceleration
• force=mass + acceleration
• force=mass x acceleration

When one object applies a force onto another object, we call this force the ​​ (a)   . In response to this, a force called the ​ (b)   occurs.

• action
• reaction
• force
• inertia
• mass
• matter

Tags

NGSS.MS-PS2-1

Janet is rolling a bowling ball and a tennis ball down the hallway.

Why would she need to apply more force to the bowling ball than she did to the tennis ball?

• The difference in the friction

• The difference in the mass

• The different in the gravity

• She would not need to apply more force.

Tags

NGSS.MS-PS2-2

An object with a higher mass will require ​ (a)   force.

An object with a lower mass will require ​ (b)   force.

• more
• less

Tags

NGSS.MS-PS2-2

Will it take more force to push an empty shopping cart or a shopping cart that is full?

• The empty shopping cart
• The full shopping cart
• They will take the same amount of force

Tags

NGSS.MS-PS2-2

Which shopping cart will have more acceleration?  

• The empty shopping cart
• The shopping cart that's full
• They will be the same

Tags

NGSS.MS-PS2-2

Why would one ball travel a greater distance than the other when pushed with the same amount of force?

• Different sizes
• Different weights
• Different masses
• Different forces

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If you push the ping pong ball & the basketball with the same amount of force, which one will go a greater distance?

• The ping pong ball
• The basketball
• They will both travel the same distance

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1