Question
The picture shows a physics lab set up.
Why does the disc fall straight down into the glass when we quickly pull the index card away from the glass in a horizontal direction?
(1 point)
Responses
equilibrium
equilibrium
static friction
static friction
kinetic friction
kinetic friction
inertia
inertia
Why does the disc fall straight down into the glass when we quickly pull the index card away from the glass in a horizontal direction?
(1 point)
Responses
equilibrium
equilibrium
static friction
static friction
kinetic friction
kinetic friction
inertia
inertia
Answers
Answer
A student is riding the school bus. The bus stops as the driver applies the brakes. Which of these statements best describes this situation?(1 point)
Responses
The school bus does not lose or gain kinetic energy.
The school bus does not lose or gain kinetic energy.
A force is changing the motion of the bus.
A force is changing the motion of the bus.
The bus is gaining energy because of friction.
The bus is gaining energy because of friction.
There is no force acting on the bus so it stops moving.
Responses
The school bus does not lose or gain kinetic energy.
The school bus does not lose or gain kinetic energy.
A force is changing the motion of the bus.
A force is changing the motion of the bus.
The bus is gaining energy because of friction.
The bus is gaining energy because of friction.
There is no force acting on the bus so it stops moving.
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