
U3 Forces and Motion POSTTEST 2024
Quiz by Amanda Rogers
Track each student's skills and progress in your Mastery dashboards
The graph shows the distance an object travels over time. Which answer correctly describes the object's motion during each interval of time?

In which time interval was the object speeding up?

Hector went to the grocery store by heading due north at 3 m/s, then turning east and continuing at the same speed for another three blocks. Which of the following is true about Hector's velocity?
A train rolls to a stop along a horizontal track without the conductor applying the brakes. What answer choice BEST explains why this occurred?
The Smith family is traveling in their car at 50 km/h due east. Mr. Smith is using cruise control to maintain a constant speed. Describe the net force acting on the Smith car.
Brad and Erin decide to have a tug of war contest. Erin pulls the rope with all her might and so does Brad. Sadly, Brad only pulls with half the force that Erin pulls with.
Since the forces are unbalanced the rope will move towards Erin. Using Newton's first law of motion as a model, explain how Brad could keep from losing the tug of war.
Your teacher was given an apple by a student trying to get on her good side. It sits on her desk the whole year, not moving.
You know that, if the apple were to roll off the desk, it would fall to the ground. So what is keeping the apple motionless on the desk?
The image above shows two opposite forces acting on a rolling cart, what can we say is true about the effect of the forces on the cart?

Consider the four free-body diagrams. Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation. Do any of the free-body diagrams indicate motion? If yes, which one(s). Explain.

Imagine you are on the top of a mountain with four basketballs. The mass of the four basketballs are 100 kilograms, 200 kilograms, 300 kilograms, and 400 kilograms. If the basketballs rolled down the hill, which one would supply the greatest force at the bottom of the mountain (assuming that their velocities were equal at the bottom of the mountain)?
Mutt and Jeff are running along a path each pushing a cart loaded with rocks. If Mutt's wagon has a mass two times greater than Jeff's and they want to stay together, arriving at their destination at the same time, what must happen?
Meg and Rachel each have bowling balls with the same mass. They both roll them as hard as they can and then measure the speed of the balls.
Meg's ball and Rachel's ball were measured to have the exact same speed.
What do you know about the forces applied by the girls?
Kimberly, Alex, and Fernando built small sailboats in science class. Their boats have the following weights:
Kimberly: 150 grams
Alex: 175 grams
Fernando: 200 grams
Think about how much force is needed to move each boat. Which correctly lists the boats in order from the most to least amount of force needed to move them?
It takes more force to accelerate the Iron Man on the left than the Iron Man on the right because the Iron Man on the left has more mass. This best describes

An automobile you are riding in suddenly stops, but you continue to go forward.
Calculate the Net Force.Â

Why is the following chemical equation not balanced?   H2 + O2 --> H2O
Which would increase an object's temperature?
Maria and Carla were hiking when Maria tripped, fell, and sprained her ankle. Carla took out the first-aid kit and unwrapped a cold pack. Carla popped a vial that was inside the cold pack. The pack began to get icy cold and Carla applied the pack to Maria's ankle. What kind of reaction occurred in the cold pack? What evidence supports your answer?
When she dropped a rock into a graduated cylinder of water, Veronica noticed it sank to the bottom. She decided to investigate what it would do if she tossed it into a much larger amount of water. When she tossed it into a lake, the rock sank again. Which statement best explained why this happened?

Arrange the substances [SUN, TREE. NEON GAS, LEMONADE]Â in the table from the MOST to the LEAST ordered particle arrangement.
Valeria placed batteries in her remote control used to control the television.  Which of the following explains how the batteries are used to power a remote control?
A cubic box with a mass of 10N falls from Position “a” to the ground at Position “c”. Which statement describes the transformation of energy in the diagram?

Which statement best describes the arrangement of elements in the periodic table?
Billy pushes a supermarket cart with a constant force F . Every time he adds groceries to the cart, the weight of the cart increases. Billy adds groceries until the cart is filled.Â
How do the groceries affect the cart's acceleration if the force Billy uses to push the filled cart is the same force he used to push the empty cart?