Unit Test — Unit test Answers

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

The graph shows two runners participating in a race.

Which example best represents balanced forces?

How is speed calculated?

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

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?

A graph labeled velocity versus time with horizontal axis time (seconds) and vertical axis velocity (meters per second). A blue line runs straight across at 2 units on the vertical axis for all horizontal axis values.

The resulting net force of an object is represented below. →10 NWhich most likely represent the forces acting on the object?

Anya knows the velocity of an object. What else does she need to know in order to find the object’s momentum?

A bicycle has a momentum of 36 kg • m/s and a velocity of 4 m/s. What is the mass of the bicycle?

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.

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

Which refers to the sum of all the forces that act upon an object?

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

Which would be represented by FN on a force diagram?

The chart lists the masses and velocities of four objects.

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

Jerome solves a problem using the law of conservation of momentum. What should Jerome always keep constant for each object after the objects collide and bounce apart?

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?