Force and Motion Study Guide
Quiz by Cheryl McLawhorn
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41 questions
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- Q1Leah watches a toy car move across a table at a constant speed. The car moves across the table in one direction and falls off the other side. Leah decides to try another situation. She watches the car move across the table at a constant speed, then when it reaches the other side of the table, her friend Joey pushes the car in the other direction. The car moves back to Leah. Based on Leah's informal experiment, the car changes direction because of _______ force, which happens because _______.a balanced; Joey pushes the caran unbalanced; Joey pushes the caran unbalanced; Leah watches the cara balanced; the car moves across the table120s
- Q2Melinda and Bart are sitting beside each other in the third car of a roller coaster. From whose reference point are Melinda and Bart moving away from the observer?a person standing on the ground in front of the roller coastera person sitting in the first car of the roller coastera person sitting in the last car of the roller coastera person standing on the ground behind the roller coaster120s
- Q3Jennifer stands on one side of a filing cabinet and pushes with a force of 60 N. If Nathan wants to help Jennifer demonstrate balanced forces, what does he need to do?cause the cabinet to movestand on the same side of the cabinet and push with a force of 60 N in the same direction as Jenniferstand on the opposite side of the cabinet and push with a force of 60 N toward Jenniferstand on the opposite side of the cabinet and push with a force of 120 N toward Jennifer120s
- Q4An object travels a given distance at a speed of 5 m/s. If the object travels the same distance at a higher speed, how will the faster speed affect the time it takes the object to travel the distance?It will take less time to travel the distance.It will take more time to travel the distance.The time will not be affected.The time will remain constant.120s
- Q5A hockey puck slides across an ice rink more easily than it does across a rough concrete surface. Why is this?There is more gravity on the ice rink.There is less gravity on the ice rink.There is more friction on the ice rinkThere is less friction on the ice rink.120s
- Q6If the swing set shown above is the reference point, which statement correctly describes the car's motion as it moves from position 1 to position 2?The car is approaching, then moving away.The car is approaching.The car is not moving relative to the swing set.The car is moving away120s
- Q7_______ measures an object's change in position per unit time.DistanceForceSpeedAcceleration120s
- Q8How would the forces on the book best be described?The forces on the book are unbalancedThe forces on the book are balancedThe forces on the book cause a change in the book's motion.The forces on the book do not cancel each other out.120s
- Q9The motion of an object can be described by itsspeeddirectionall of theseposition120s
- Q10A book is sitting on the table at rest. The forces acting on the book include _______, and these forces are _______.gravity pushing up and friction pushing to the right; balancedgravity pushing up and friction pushing to the right; unbalancedgravity pushing down and the table pushing up; unbalancedgravity pushing down and the table pushing up; balanced120s
- Q11Hannah just finished building a house of cards that stands four stories high. She is worried that it will fall down. Which of the following statements is definitely TRUE?If no unbalanced force acts upon the house of cards, then it will remain standing forever.If Hannah adds another card to the house of cards, then it will fall downA house of cards is too fragile and must fall down eventually.As long as nobody touches the house of cards, it will remain standing120s
- Q12Look at the rock sitting on the hill in the picture above. Gravity should make the rock slide down the hill. What force is acting to balance gravity, keeping the rock in place?centripetal forcegravityfrictionmomentum120s
- Q13A train is speeding down a railroad track at a speed of 50 miles per hour. From whose reference point is the train not moving?a person sitting on the tracks 1 mile in front of the traina person sitting on the tracks 1 mile behind the traina person standing to the side of the railroad tracksa person sitting on the train120s
- Q14Barry knocks a baseball into the air with his bat. Shortly after the ball is hit, it is traveling at 25 m/s to the east and parallel to the ground. After two seconds, the ball is 50 meters to the east of Barry. Which of the following best describes the ball's direction of motion?East2 s50 m25 m/s120s
- Q15If an object is moving at a constant speed in one direction, what is needed to change its speed or direction?a long period of timea short period of timea balanced forcean unbalanced force120s
