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T1 Science

LESSON 7. HOW FRICTIONAL AND GRAVITATIONAL FORCES AFFECT MOTION

QuestionAnswer
Friction Opposes Motion can cause objects to: slow down (change in speed) stop (change in movement)
Friction Helps Control Movement can also help objects move in a controlled way.
Gravity Causes Released Objects to Fall When an object is released from a height, gravity pulls it downward and causes it to fall.
Gravity Increases the Speed of Objects As the object falls, its speed increases.
Gravity Changes the Direction of an Upward-moving Objects As the object falls, its direction changes.
A toy car rolling on the floor gradually slows down. What force is affecting the car? 2. A ball is dropped from a table. How does gravity affect its movement? 1.Friction 2.Gravity causes the ball to change from rest to downward motion.
3. A ball is thrown upward and then comes back down. What happens to its direction? 4. A ball rolls across the ground and eventually stops. What happens to its speed? What force causes this change? 3. Its direction changes from upward to downward. 4. Its speed decreases because of friction.
4. A ball rolls across the ground and eventually stops. What happens to its speed? What force causes this change? 5. A ball rolls down a slope and slows down as it reaches the ground. What two forces are acting on the ball? 4. Its speed decreases because of friction. 5.Gravity and friction.
Created by: user-2046368
 

 



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