CPPS Exam Review 2023 Graded A+

Topic One - ANSWER-Topic One When an object's distance from another object is changing...... - ANSWER-It is in motion When you know both the speed and direction of an object's motion, you know the...... - ANSWER-velocity of the object. You can show the speed of an object on a line graph in which you plot time against...... - ANSWER-distance Average speed is.... - ANSWER-the total distance traveled divided by the total time. A place or object used for comparison to determine if something is in motion is called..... - ANSWER-a reference point On a graph showing distance versus time, a horizontal line represents an object that is...... - ANSWER-not moving at all. If you know the distance an object has traveled in a certain amount of time, you can determine...... - ANSWER-the speed of the object. If an object moves in the same direction & at a constant speed for 4 hrs, which of the following is true? - ANSWER-The object's velocity did not change. The steepness of a line on a graph is called.... - ANSWER-slope The rate at which velocity changes is called.... - ANSWER-acceleration EX: A car approaching a red light - ANSWER-deceleration To determine the acceleration rate of an object, you must calculate the change in speed during each unit of.... - ANSWER-Time On a graph showing speed versus time, a horizontal line represents an object that is - ANSWER-moving at a constant speed EX: a carpenter hammering a nail - ANSWER-exerting a force What happens when two forces actin the same direction?. - ANSWER-They add together. The tendency of an object to resist change in is motion is known as - ANSWER-inertia. The greater the mass of an object. - ANSWER-the greater its inertia One way to increase acceleration is by - ANSWER-decreasing mass increasing force EX: bike tires on the road as you ride - ANSWER-rolling friction The amount of matter in an obiect is called its - ANSWER-Mass EX: throwing sand on an icy driveway - ANSWER-increasing friction intentionally The force that pulls falling objects toward Earth is called...... - ANSWER-gravity Objects falling through air experience a type of friction called - ANSWER-Air resistance/fluid According to Newton's third law of motion, when a hammier strikes and exacts force on a nail, the nail.... - ANSWER-Exerts an equal force back on the hammer Balanced forces acting on an object.... - ANSWER-never change the object's motion What is the deceleration of a 5400g toy truck with a force of 32N? - ANSWER--5.9 m/s2 A 20N force & a 15N force act on an object in opposite directions. What is the net force on the object? - ANSWER-5N What is the net force of a 200-kg crate sitting at rest on a factory floor? - ANSWER-Zero A long distance runner completes a 50km race with an average speed 72 . How long did it take the runner to complete the race? - ANSWER-6.9 hr She drove for 2 hours and made it 214km. Mrs. Marmo drove 2.5 hours and made it 262km. Mrs. Widener drove 3 hours and made it 222km. - ANSWER-93.1 km/hr If an object accelerates 18m/s? when a force of 62N is exertad, what is the objects mass? - ANSWER-3.9 kg When you know both the speed and direction of an object's motion, you know the - ANSWER-velocity of the object. You can show the speed of an object on a line graph in which you plot time against - ANSWER-distance When an objecf's distance from another object is changing. - ANSWER-it is in motion. Averago speed is - ANSWER-the total distance traveled divided by the total time. On a graph showing distance versus time, a horizontal line represents an object that is - ANSWER-not moving at all.