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by BlastRoom
Distinguish balanced from unbalanced forces and predict their effects on motion.
#forces#us_grade_3_science
20 questions
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A book sits still on a table. The forces on it are ___.
Two kids push a box with equal force from opposite sides. The box does not move. What kind of forces are acting on it?
A soccer ball rolls and then slows down and stops. What must have happened to the forces on the ball?
When forces on an object are balanced, the object stays at rest or keeps moving at the same speed and direction.
A toy car is pushed to the right with a strong force and to the left with a weak force. Which way does the car move?
A dog pulls a sled forward. No force pulls the sled backward. The forces on the sled are ___.
A ball hangs still on a string. How does the string's upward pull compare with Earth's downward pull?
Two teams in a tug-of-war pull the rope with equal strength. The rope does not move. The forces on the rope are ___.
A skater gliding on ice starts moving faster. What can you conclude about the forces on the skater?
A push to the left and a pull to the left both act on a wagon. How do these forces combine?
A heavy box does not move when you push it lightly. What does this tell you about the forces on the box?
A ball is kicked and changes direction. The forces on the ball at the moment of the kick were ___.
What happens to an object's motion when the forces acting on it are unbalanced?
In science, what does it mean to say an object is at rest?
Maya pushes an empty swing gently, then pushes it hard. Which push changes the swing's speed more?
A skydiver with an open parachute falls straight down at a steady speed. What are the forces on the skydiver?
A bike rider squeezes the brakes and the bike slows down. What does this tell you about the forces on the bike?
A rope is pulled at both ends at the same time, and the rope slides toward the left end. What does this show?
A wagon rolls faster and faster down a path, so the forces on the wagon are balanced.
A ball rolls at a steady speed across a smooth floor and nothing touches it. What will the ball most likely do next?
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20 questions
