Every few years, different countries compete in a sailboat race called the America's Cup. The boats sail over the same distance. Besides distance, what else is needed to find out the speed of each boat in the race? (1 point)

Question

• The combined size of the boats in the race.
• The time it takes for each boat to finish the race.
O The wind speed during the race.
• The skill of the crew of each boat in the race.

Answer 1

To find out the speed of each boat in the race, you need to know:

• The time it takes for each boat to finish the race.

Speed is calculated by dividing distance by time, so the time taken to complete the race is essential for determining each boat's speed.

Answer 2

On a position-time graph, which of the following does the value of the slope indicate about the object? (1 point)
• Change in position
• Total distance
• Velocity
• Change in direction

Answer 3

On a position-time graph, the value of the slope indicates:

• Velocity.

The slope of the graph represents the rate of change of position with respect to time, which is the definition of velocity.

Answer 4

Which situation is an example of negative acceleration? (1 point)
• A bicycle increasing its velocity as the rider pedals harder
• A car moving at a constant velocity
• A jogger slowing down at the end of a race
A diver jumping of a diving board and falling to the swimming pool

Answer 5

The situation that is an example of negative acceleration is:

• A jogger slowing down at the end of a race.

Negative acceleration, also known as deceleration, occurs when an object is reducing its speed. In this case, the jogger is slowing down, indicating negative acceleration.