This lesson includes 17 additional questions and 4 additional question variations for subscribers.

# Lesson Worksheet: Average Speed Science

In this worksheet, we will practice distinguishing between constant speed and average speed.

**Q1: **

If the speed of an object changes as the object moves, is the speed of this object uniform?

- ANo
- BYes

**Q5: **

The toy car shown was traveling at a uniform speed before we started to measure its speed by recording its position each
second. Between which of the following times was the car definitely **not** uniformly moving at a speed of
1 meter per second?

- ABetween 1 second after measurement starts and 3 seconds after measurement starts
- BBetween the start of measurement and 1 second after the start of measurement
- CFor the whole time that the car moved

**Q6: **

The speed of a toy car is measured by recording its position each second. Between which of the following times is the average speed of the car the greatest?

- AFrom when measuring starts to 1 second after measuring starts
- BFrom 1 second after measuring starts to 2 seconds after measuring starts
- CFrom 2 seconds after measuring starts to 3 seconds after measuring starts

**Q7: **

The speed of a toy car is measured by recording its position each second. How does the average speed of the car in the first meter that it moves compare to its average speed for the entire distance that it moves?

- AThe average speed in the first meter is less than the average speed for the entire distance.
- BThe average speed in the first meter is greater than the average speed for the entire distance.
- CThe average speed in the first meter is equal to the average speed for the entire distance.

**Q8: **

The speed of a toy car is measured by recording its position each second. How does the average speed of the car in the first second compare to its average speed throughout the whole journey?

- AThe average speed in the first second is greater than the average speed during the time the speed is measured.
- BThe average speed in the first second is equal to the average speed during the time the speed is measured.
- CThe average speed in the first second is less than the average speed during the time the speed is measured.

**Q9: **

The speed of a toy car is measured by recording its position each second. Between which of the following times is the average speed of the car the least?

- AFrom 2 seconds after measuring starts to 3 seconds after measuring starts
- BFrom 1 second after measuring starts to 2 seconds after measuring starts
- CFrom when measuring starts to 1 second after measuring starts

**Q10: **

Which of the following cannot be true for an object that has a constant speed of 6 meters per second?

- AThe motion of the object is measured for 9 seconds.
- BThe object travels a distance of 54 meters.
- CThe object starts from rest.
- DThe object changes direction.