Vocabulary
Collisions
Changes in Velocity
Common Misconceptions
Random Mix
100

Friction

force acting against the movement of object between the object and the surface that it is moving on

100

If two things collide, they experience _________ force in ___________ directions

equal; opposite

100

A red ball going 10m/s experiences a force and has an ending velocity of 12 m/s

A yellow ball going 4m/s experiences a force and has an ending velocity of 8m/s.

Which one experienced the greater force assuming they have the same mass?

yellow

100
True or False: objects with more mass have more force
false- objects cannot have force
100

If you add wheels to a cart, what does this do to the amount of friction acting on the cart?

the amount of friction decreases
200

true

200

If two objects of different mass collide, which object is most affected by the collision?

the one with less mass

200

You have two people playing tug-of-war. The one on the left is pulling with 175 newtons of force while the one on the right is pulling with 200 newtons of force. In which direction will the rope go?

the right

200

True or false: greatest change in velocity and greatest ending velocity mean the same thing

false

200

How does friction affect velocity?

slow down

300

Mass

amount of matter in an object

300

If two objects of equal mass hit each other, they will go backwards ____________ distance

a. the same

b. different

same

300

If objects of the same mass change velocity by the same amount, what does this tell you about the amount of force used on them?

the amount of force was the same

300

True or False: it requires the same amount of force to speed up an object than to slow it down

true

300

Who came up with the laws of motion?

Sir Isaac Newton

400

Velocity

Speed with direction
400

Two objects collide. One has a mass of 10kg, and the other a mass of 20kg. Which one experiences the greater force? Why?

Neither because they both experience the same force from the impact

400

If you want an object to be easier to push across the floor, what can you do?

decrease the mass or the friction

400

If an object is moving in space, it will continue moving forever. Why?

there's no friction or gravity

400

what happens if you apply force in the opposite direction of movement?

slow down, stop, or change direction

500
Formula for speed

distance divided by time

500

Two objects collide. One has a mass of 10kg, and the other a mass of 20kg. Which one experiences the greater change in velocity after colliding? Why?

the 10kg one because it has less mass

500

If you have two objects: one with 100kg of mass and another with 3kg of mass. Both of them change velocity by 2m/s. Which one had a greater force exerted on it?

the 100kg one

500

What is the relationship between mass, force, and velocity?

- As mass increases, velocity _________

-As force increases, velocity ________

decreases, increases
500

In order to start moving, what direction must you apply force?

any