Question

3.If a dolphin swims at 1.85 m/s, how far will the dolphin have traveled after 6.0 s?

speed = distancetime

(1 point)
Responses

3.2 m
3.2 m

9.0 m
9.0 m

11 m
11 m

31 m
2.The graph shows the motion of a squirrel that leaves its nest to find food.

This graph is a distance-time graph that represents the motion of a squirrel over a 9-minute period as it leaves its nest to find food. The vertical axis displays the "Distance From Nest (m)," and the horizontal axis represents "Time (min)". The graph is composed of four distinct line segments, labeled Q, R, S, and T, which illustrate the squirrel's changing position relative to its nest over time. Segment Q shows the squirrel moving away from the nest at a constant speed, as indicated by a positive, constant slope. Segment R is a horizontal line, meaning the squirrel is stationary or at rest at a constant distance of 20 meters from the nest. Segment S shows the squirrel moving even further away from the nest at a faster constant speed, as the slope is steeper than that of Q. Finally, segment T represents the squirrel heading back towards its nest at a high speed, indicated by the steep downward (negative) slope, until it reaches a distance of 10 meters from the nest at the 9-minute mark.

Which segment of the graph represents the squirrel heading toward its nest?

(1 point)
Responses

T
T

R
R

Q
Q

S
1.Which terms correctly represent a vector quantity and its respective unit?(1 point)
Responses

mass - kilogram
mass - kilogram

force - Newton
force - Newton

weight - kilogram
weight - kilogram

speed - meters per second

Answer 1

1) 11 m — distance = 1.85 m/s × 6.0 s = 11.1 m ≈ 11 m.

2) T — it has a negative slope (distance decreasing), so the squirrel is heading toward the nest.

3) force — Newton — force is a vector and its unit is the Newton (N).