If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

Match description with free-body diagram.

• A force is applied to the right to drag a sled across loosely packed snow with a rightward acceleration. Neglect air resistance.
• A football is moving upwards towards its peak after having been booted by the punter. Neglect air resistance.
• A car is coasting to the right and slowing down. Neglect air resistance. 
• A skydiver is descending with a constant velocity. Consider air resistance.

Tags

NGSS.HS-PS2-1

Match description with free-body diagram.

• A book is at rest on a tabletop.
• A gymnast holding onto a bar, is suspended motionless in mid-air. The bar is supported by two ropes that attach to the ceiling. Diagram the forces acting on the combination of gymnast and bar.
• An egg is free-falling from a nest in a tree. Neglect air resistance.
• A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.

Tags

NGSS.HS-PS2-1

Match description with free-body diagram.

• A book is at rest on a tabletop.
• A gymnast holding onto a bar, is suspended motionless in mid-air. The bar is supported by two ropes that attach to the ceiling. Diagram the forces acting on the combination of gymnast and bar.
• An egg is free-falling from a nest in a tree. Neglect air resistance.
• A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Match description with free-body diagram.

• A rightward force is applied to a book in order to move it across a desk with a rightward acceleration. Consider frictional forces. Neglect air resistance. 
• A rightward force is applied to a book in order to move it across a desk at constant velocity. Consider frictional forces. Neglect air resistance. 
• A college student rests a backpack upon his shoulder. The pack is suspended motionless by one strap from one shoulder. 
• A skydiver is descending with a constant velocity. Consider air resistance.

Tags

NGSS.HS-PS2-1

Match description with free-body diagram.

• A book is at rest on a tabletop.
• A gymnast holding onto a bar, is suspended motionless in mid-air. The bar is supported by two ropes that attach to the ceiling. Diagram the forces acting on the combination of gymnast and bar.
• An egg is free-falling from a nest in a tree. Neglect air resistance.
• A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.

Tags

NGSS.HS-PS2-1

Which diagram best shows person pushing a couch (accelerating) across the floor?

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• 
• 
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Tags

NGSS.HS-PS2-1

Which of the following free body diagrams correctly depict the forces acting on an object that is moving at a constant velocity?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

Which of the following best describes the object in this diagram if the left arrow represents drag and friction.

• A box sitting on the floor.

• A hockey puck gliding to the right.

• A runner speeding up to the right.

• A skateboarding gliding to the left.

Tags

NGSS.HS-PS2-1

Describe the direction of the motion of this object.

• The object is stopped because the forces are balanced.

• The object is moving down because the down arrow is bigger.

• The object is moving down because Drag is going up.

• The object is moving up because the up arrow is bigger.

Tags

NGSS.HS-PS2-1