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17 questions
Which of the following answers is the most scientific answer for the question:
What is friction?
The random force between two solids, liquids, or gases.
The contact force between two solids, liquids, or gases that slide past one another.
The thing that creates static electricity
A force that is random
When there is friction, the energy of an object's motion is converted into _______ energy
heat
kinetic
stronger
friction
Which of the following is NOT an example of friction?
using the brakes on your bike to slow you down
putting your hand out the window
a satellite traveling through deep space
a hockey puck going across an ice rink
This car is turning, but there’s a puddle of water in the road. Which diagram best shows how the puddle will affect the path of the car after it hits the puddle?
Which of the following statements is false?
Friction can only slow things down
Friction is never useful
Friction can stop things from moving
Only solids can produce friction
true
false
The motion of an object will change when an unbalanced force is applied to it
true
false
What is acceleration?
transfer of energy to an object
going faster
a change in velocity (speed, direction, or both)
an object remaining in motion or at rest until something changes it
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