Question

1. the graph shows distance traveled during a bicycle race. because the upward slope on the graph is and objects do not normally travel at a constant rate, what does it most likely represent?

a. average acceleration
c. average speed
b. actual acceleration
d. actual speed
use the graph below to answer the following question.
graph b

1. this is a graph of a roller coaster car moving up a hill. what does the straight upward slope on the gra show?

a. positive velocity
c. positive acceleration
b. negative velocity
d. negative acceleration

1. if a baseball and a cannonball are dropped from the same height at the same time, another is no air res which ball will hit the ground first?

a. the cannonball lands first.
c. the balls land at the same time.
b. the baseball lands first.
d. the ball with the larger volume lands first.

1. which is a common unbalanced force acting on objects in motion?

a. inertia
b. acceleration
c. friction
d. speed

Explanation:

1. A distance-time graph's slope represents speed. A constant slope means constant average speed; actual speed would vary, and acceleration relates to velocity change, not distance-time slope.
2. A straight upward slope on a distance-time graph means constant positive velocity (distance increases steadily with time; acceleration would be a curved slope).
3. In the absence of air resistance, all objects fall at the same acceleration due to gravity, so they hit the ground simultaneously regardless of mass.
4. Friction is a common unbalanced force that acts against moving objects; inertia is a property, acceleration is a motion change, speed is a motion measure, not forces.

Answer:

1. c. average speed
2. a. positive velocity
3. c. The balls land at the same time.
4. c. friction