Flashcards
Force and Motion and Newton's 2nd Law_Science Study Guide
Flashcards do conjunto (40)
- 1What is a push or pull exerted on matter?Force
- 2Force:Gives motion to matter in a given direction.
- 3Matter will _____ when force is applied.Accelerate;(Speed up, Slow down, or Change direction;)
- 4What will motion be in the direction of?Force
- 5Forces are indicated with a:Vector (arrow) that has magnitude (value) and direction
- 6What is a push or a pull an example of?Common Forces
- 7What force causes an object to go back to its original shape?Elastic Forces
- 8What is an opposing force created when matter touches or rubs against other matter?Friction
- 9What is an inward pulling force that causes matter in outer space to form spheres?Gravity
- 10What force is the combination of all forces acting on an object?Net Force
- 11What are the two things that Net Force does?1. Determines whether the object moves;
2. Determines which direction the object moves in; - 12What direction will an object move?The direction of the greatest force.
- 13If an object moves, the forces are _____.Unbalanced
- 14If an object does not move, the forces are _____.Balanced
- 15What is the sum of balanced forces?0
- 16If the Net Forces equal zero, the object has a _____.State of Equilibrium
- 17What forces do not equal zero?Unbalanced Forces
- 18Net force does not equal zero, so _____.A change in velocity or acceleration will occur
- 19When is the motion of an object in a state of equilibrium?When it is at Rest or in a Constant State of Velocity
- 20The longer the arrow:The stronger the force
- 21Draw the arrow in the direction of the _____.Force
- 22What label do you write for each force arrow?(N) Newtons
- 23If values are given, arrows going in the opposite direction must be _____ from each other to find the net force.Subtracted
- 24Arrows going in the same direction must be _____ to each other to find the net force.Added
- 25Newton's Second Law explains:The relationship between force, mass, and acceleration
- 26If mass does not change, an increase in _____ will cause an increase in _____.Force, Acceleration
- 27If force does not change an increase in _____ will cause a decrease in _____.Mass, Acceleration
- 28What is the formula for force?Force (N) = Mass (kg) * Acceleration
(m/s ²)
F = MA - 29The direction an object travels in a given amount of time is:Speed
- 30Speed in a given direction is:Velocity
- 31What is the formula for speed?Speed = Distance/Time
S = D/T - 32What is the formula for velocity?Velocity = Distance/Time
V=D/T - 33What do the formulas represent?The average speed; (Total distance/ Total Time)
- 34The change in speed in a given amount of time is:Acceleration
- 35Acceleration is how long it takes to:Speed Up, Slow Down, or Change Direction
- 36What are the standard units for acceleration?m/s/s or m/s ²
- 37What is the formula for acceleration?Acceleration = Vf - Vi/T
- 38A train is resting on a track when another train with several more cars bumps into it and causes it to move 10 meters forward. This is an example of acceleration because:an unbalanced force causes the train to keep moving.
- 39A student conducts an experiment where he drops two balls off a table to determine the force of impact. The ball with a larger mass makes a bigger dent in the sandpit than the ball with the smaller mass. This describes Newton's Second Law because:increasing the mass of a moving object increase the force exerted. (F = ma)
- 40A dog is chasing you at a speed of 10 m/s to the west. You are running away from him at a speed of 8 m/s to the west. This scenario describes velocity because:velocity is speed with a direction.
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- 8th grade Science FlashCards sobre Force and Motion and Newton's 2nd Law_Science Study Guide, criado por Alexa Samuels em 06-10-2019.
- Criado por
- Alexa Samuels
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