DCA #3 Review

A cyclist travels a distance of 400 meters in 80 seconds. What is the cyclist's average speed?

• 32,000 m/s

• 5 m/s

• 0.2 m/s

• 20 m/s

A snail travels a distance of 60.0 centimeters (cm) in 120.0 seconds (s). What is the snail's average speed?

• 0.5 cm/s

• 2.0 cm/s

• 7200 cm/s

• 120 cm/s

A hiker planned a route around a small park. They followed a path as shown in the diagram below, returning to their starting point. It took them 4 hours to complete the hike. What was the hiker's average speed for the entire hike?

• 3.0 km/h

• 3.5 km/h

• 2.5 km/h

• 1.5 km/h

The diagram below shows information about the motion of a model train between two points on a track. What is the average speed of the train between the two points?

________ m/s

Which scenario represents objects having the same velocity?

• A bird flying north at 15 m/s and another bird flying south at 15 m/s.

• A runner jogging east at 5 m/s and a cyclist riding east at 5 m/s.

• A ball rolling down a hill at 2 m/s and a ball rolling across a flat surface at 2 m/s.

• A leaf falling straight down at 1 m/s and a feather floating horizontally at 1 m/s.

Which of the following accurately represents the velocity of a cyclist?

• 25

• 25 km/h

• 25 m/s

• 25 m/s East

A hiker walks 8 kilometers north, then turns around and walks 3 kilometers south. What is the hiker's total displacement?

• 5 kilometers

• 5 kilometers north

• 11 kilometers

• 11 kilometers south

A race car travels around a circular track at a constant speed of 150 miles per hour.

How does the velocity of the race car compare to its speed?

• The velocity is greater than the speed because the car is accelerating.

• The velocity is the same as the speed because the car is moving at a constant rate.

• The velocity is changing because the car is changing direction, even though its speed is constant.

• The velocity is zero because the car is moving in a circle and returning to its starting point.

The graph shows the position of a bicycle rider along a path over a period of 9 minutes. The rider's position is recorded at regular intervals.

What is the bicycle rider's motion at 7 minutes?

• At rest

• In constant motion away from the starting point

• Moving toward the starting point

• Speeding up

A group of students is studying the motion of a toy car rolling across a table. Which of the following distance vs. time graphs best represents the toy car slowing down (deceleration)?

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