Forces Quiz HMH PDF

Name: Date: Unit 1 Lesson 1 Lesson Quiz Quiz: Introduction to Forces Read each question. Circle the letter of the correct answe...

Name: Date: Unit 1 Lesson 1 Lesson Quiz Quiz: Introduction to Forces Read each question. Circle the letter of the correct answer. 1. What is gravity? 5. Why are some forces considered to be noncontact forces? A. a contact force A. Objects must be far apart in order to exert B. a frictional force a force. C. a magnetic force B. Objects do not have to touch each other to D. a noncontact force experience a force. 2. Which of these is considered a contact force? C. Objects push each other apart to increase the distance between them. A. the force between two magnets D. Objects must be large in size in order B. the gravitational pull of a planet to exert a force that is strong enough C. the friction between an object and air to notice. D. the force between two charged particles 6. Why is the friction force considered to be a contact force? 3. A box has two forces acting on it. One force is 100 N upward. Another force is 50 N A. Friction affects only solid objects. downward. What is the net force on the box? B. Friction always acts in the same direction. A. 50 N upward C. Friction is produced when objects slide B. 100 N upward past one another. C. 50 N downward D. Friction acts in a direction opposite to the direction of an object’s motion. D. 100 N downward 7. Why is the magnetic force considered to be a 4. Melanie watched the path a baseball noncontact force? followed after a pitcher threw it. She noticed that the ball traveled horizontally away from A. Magnets must be far apart in order to exert the pitcher as well as downward toward the a force. ground. What force caused the ball to B. Magnets do not have to touch each other to accelerate in the downward direction when it experience a force. was thrown? C. Magnets push each other apart to increase A. applied force the distance between them. B. air resistance D. Magnets must be large in size in order C. electrical force to exert a force that is strong enough to notice. D. gravitational force Lesson Quiz 1 Module K Assessment Guide © Houghton Mifflin Harcourt Publishing Company Name: Date: Unit 1 Lesson 1 Lesson Quiz Read each statement. Write your answer on the lines. 8. A bird flies at 12.5 meters per second. The wind speed is 4.5 meters per second. What is the speed of the bird when it flies with the wind? What is the speed of the bird when it flies against the wind? 9. Marek is trying to push a box of sports equipment across the floor. The arrow on the box is a vector showing the force Marek exerts. Describe all the forces acting on the box. Explain what needs to happen for the box to start moving. Lesson Quiz 2 Module K Assessment Guide © Houghton Mifflin Harcourt Publishing Company Name: Date: Unit 1 Lesson 1 Lesson Quiz 10. The diagram shows the forces acting on a box. Explain how to calculate the net force in any direction on the box. Determine the net force upward or downward. Determine the net force to the right or left. Predict how the box will move. Lesson Quiz 3 Module K Assessment Guide © Houghton Mifflin Harcourt Publishing Company