A hamster in a ball begins its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and ends its journey directly in front of the refrigerator.
If negative values are assigned to positions to the left of its starting position and positive values are assigned to positions to the right of its starting position, what is the displacement of the hamster?
(1 point)
Responses
-5 feet
-5 feet
5 feet
5 feet
0 feet
0 feet
20 feet
20 feet
5 feet
A cat wakes up in its bed and visits its food dish to the left of its bed.
Positions to the right of its bed are assigned a negative value and positions to the left of its bed are assigned a positive value.
Time (m) 1 2 3 4 5
Position (m) 0 2 4 -5 -10
Where did the cat begin and end its journey?
(1 point)
Responses
The cat began its journey in bed and ended its journey 10 meters to the right of its bed.
The cat began its journey in bed and ended its journey 10 meters to the right of its bed.
The cat began its journey in bed and ended its journey 5 meters to the left of its bed.
The cat began its journey in bed and ended its journey 5 meters to the left of its bed.
The cat began its journey at its food dish and ended its journey 10 meters to the left of its bed.
The cat began its journey at its food dish and ended its journey 10 meters to the left of its bed.
The cat began its journey at its food dish and ended its journey 10 meters to the right of its bed.
The cat began its journey in bed and ended its journey 10 meters to the right of its bed.
hich statement correctly classifies distance and displacement?(1 point)
Responses
Both distance and displacement are scalar quantities.
Both distance and displacement are scalar quantities.
Both distance and displacement are vector quantities.
Both distance and displacement are vector quantities.
Distance is a scalar quantity, and displacement is a vector quantity.
Distance is a scalar quantity, and displacement is a vector quantity.
Distance is a vector quantity, and displacement is a scalar quantity.
Distance is a scalar quantity, and displacement is a vector quantity.
On a position vs. time graph, which feature would represent motion in the negative direction over time?(1 point)
Responses
an upward-sloping line segment
an upward-sloping line segment
a downward-sloping line segment
a downward-sloping line segment
a horizontal line segment
a horizontal line segment
a vertical line segment
a downward-sloping line segment
Two construction workers are attempting to pull a slab of concrete off of the ground. Each of the workers are pulling up with a force of 225 N, while the slab of concrete applies a gravitational force of 400 N in the opposite direction, remaining stationary.
If the pulling forces applied to the slab of concrete are assigned a positive value, what is the net force of the scenario, and in which direction will the slab of concrete move?
(1 point)
Responses
-175 N; the slab will remain stationary
-175 N; the slab will remain stationary
50 N; the slab will move upward
50 N; the slab will move upward
-50 N; the slab will remain stationary
-50 N; the slab will remain stationary
175 N; the slab will move upward
50 N; the slab will move upward
A stone with a mass of 10 kg sits on the ground. Gravity acts on the stone at a rate of 9.8 m/s2. What is the normal force acting on the stone, keeping it at rest?(1 point)
Responses
9.8 N
9.8 N
98 N
98 N
10 N
10 N
1.02 N