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Force and Motion
Force and Motion Test Review
| Question | Answer |
|---|---|
| An object that is at rest will begin to move if ... | unbalanced forces act on the object |
| If an object travels 42 meters in 6 seconds, what is its average speed (hint: speed = distance/time) | 7m/s |
| What is the average speed of a toy car that travels 240 cm in one minute? (hint: speed = distance/time) | 4 cm/s |
| During a game of tug-of-war, in which two teams pull on opposite ends of a rope, the center of the rope will move when... | one team pulls with more force than the other |
| Students are graphing data they recorded in class of a marble rolling across the floor. The graph label that would accurately describe a correct assignment of the label would be | "Distance in Centimeters" on the y-axis |
| If two people are trying to move a very large box, the person on the left is using a force of 40 Newtons to pull the box and the person on the right is using a force of 30 Newtons by pushing the box, what is going to happen to the box? | The box will accelerate to the left. |
| Which two measurements are needed in order to calculate the speed of an object in motion? | Distance and time |
| An object remaining in the same spot relative to another object is in the | Resting Position |
| The path that an object is moving or facing is called | Direction |
| TRUE or FALSE A student claims that unbalanced forces acting on an object in motion can cause all of the following results: The object will stop moving The object could speed up The object could change directions | TRUE |
| The change in an object's position with respect to time and in comparison with the position of other objects used as reference points is referred to as | Motion |
| The rate of change of position (or distance traveled) with respect to time; units in which speed is measured are expressed as distance per time (example: meters per second) is know as | Speed |
| TRUE or FALSE Weight changes, mass does NOT if you move away from Earth. | TRUE |
| What is the difference in average speed between two cars, one that traveled 160 kilometers in 5 hours, and the other one that traveled 140 kilometers in 5 hours? (hint: find speed for each car) | 4 km/h |
| This type of graph illustrates changes in motion. Time is graphed on the x-axis and distance is graphed on the y-axis is known as | Distance vs. Time Graph |
| A box rests motionless on the ground. One student is pushing the box to the right with a force of 2 Newtons. The other student is pushing too the left with a force of 5 Newtons. In which direction and with what type of speed will the box move? | It will move to the left at an increasing speed. |
| A motorcycle traveled 250 kilometers in five hours. What is the average speed in km/hr? (hint: speed = distance/time) | 50 km/hr |
| What motion will result from two forces acting on an object: one force of 50 Newtons to the east, the other a force of 30 Newtons to the west? The object will... | accelerate to the east |
| What is the correct formula for calculating speed? | Speed = Distance/Time |
| The horizontal line with labels on a coordinate grid, where time is represented, is called... | x-axis |
| TRUE or FALSE If there is not air resistance, all objects ill fall at the same acceleration. | TRUE |
| The horizontal line with labels on a coordinate grid, where time is represented, is called... | y-axis |
| This is calculated by dividing the total distance an object traveled by the total time it took the object to travel the distance (s=d/t). Speed describes the rate of movement. This is known as.... | Average Speed |
| A graph shows the speed of a car traveling east over a 12 second period. For the first 6 seconds the line of the graph is shown to have steady upward movement from left to right, this would indicate ... | accelerating at a constant rate |
| A push or pull that can change the motion of an object, measured with a spring scale in Newton (N) units is known as... | Force |
| Forces on an object that do not change the motion of the object are known as... | Balanced Forces |
| If a graph shows the motion of an object as measured and recorded in consistent units of time and distance, it can be concluded that the object was moving... | at a constant speed |
| Forces on an object that cause change in the motion of the object are known as... | Unbalanced Forces |
| Two horses facing opposite directions but move in the same direction how are the forces applied in the situation | the horses have an unbalanced force that moves in the direction they are both going |
| A person on a pink bicycle travels 20 meters in 4 seconds, what is the average speed of the pink bicycle? | 5 m/s |
| It takes five hours to travel 300 miles from Midland to Fort Worth, what is the average speed of the trip? (hint: speed = distance/time) | 60 mph |
| TRUE or FALSE Friction allows object to be in motion. | FALSE |
| A toy rocket has two forces, lift and gravity, how would the rocket move upward? | The lift would have a great force (number) than the gravity (number) |
| How many Laws of Motion did Newton have? | Three |
| Forces that cause motion are | unbalanced and great forces than the opposing force |
| Friction produces | heat |
| To describe position through motion you need to have a | frame of reference |
| What is Newton's First Law of Motion? | The Law of Inertia |
| What is Newton's Second Law of Motion? | Mass and Acceleration is equal to force |
| What is Newton's Third Law of Motion? | For every action there is an equal and opposite reaction |
| TRUE or FALSE Balanced forces DO NOT cause motion. | TRUE |