Unit Test — Unit test Answers

Anna drew a diagram to compare the strong and weak force.

is the displacement of an object during a specific unit of time.

Jared is experimenting with a force that is attractive only and the weakest of the fundamental forces. He is experimenting with which force?

Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. His car was 20 meters from the starting line. This took 5 seconds.What is the car’s average velocity?

Which describes what a velocity/time graph would look like with no acceleration?

Newton’s first law of motion was a giant leap forward in scientific thought during Newton’s time. Even today, the idea is sometimes difficult at first for people to understand.

Hunter’s velocity was 4.5 m/s. At the end of his race, his velocity was the same. Which best describes his movement?

What is most often given a value of zero to describe an object’s position on a straight line?

Which change will cause the gravitational force between a baseball and a soccer ball to increase?

An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma)

An object in projectile motion will follow which path?

A toy car is placed at 0 on a number line.It moves 9 cm to the left, then 4 cm to the right, and then 6 cm to the left. What is the total distance the toy car traveled?

Which statement correctly describes gravity?

Scientists use a substance called Iodine-131 to treat cancer. As Iodine-131 undergoes radioactive decay and emits beta particles, it kill cancer cells.

Which force keeps molecules in a fluid together?

How is speed calculated?

The graph shows two runners participating in a race.

Which does a reference point provide?

Olivia places her pet frog on a line to observe the frog’s motion. The line is divided into sections that measure 1 centimeter each. The frog begins at 0, moves 18 centimeters forward, moves 6 centimeters backward, and then 12 centimeters backward.What is the frog’s displacement?

When discussing Newton’s laws of motion, which terms do people most likely use when talking about Newton’s third law of motion?