Helicopter Drop

What force pulls the helicopter down?

• Buoyancy

• Density

• Gravity

• Air Resistance

Answer explanation

Gravity is a force that pulls things down to the ground. It’s what makes you stay on the ground when you stand and why things like a ball fall when you drop them. Gravity is what keeps everything on Earth from floating away into space!

Tags

NGSS.MS-PS2-4

What force is pushing against the wings of the helicopter as it falls?

• Air Resistance

• Gravity

• Buoyancy

• Density

Answer explanation

Air resistance is a force that pushes against things moving through the air. It slows them down, like when you feel the wind pushing against you when you ride your bike, or when a piece of paper falls slowly to the ground instead of dropping quickly like a rock. The air is pushing up against the paper, making it fall more slowly!

How did the helicopter move?

• It spun and dropped to the ground in a random way

• It spun and dropped to the right.

• It spun and dropped to the left

• It spun and dropped straight down.

Answer explanation

Gravity will always pull things straight down unless there is another force like wind.

Tags

NGSS.MS-PS2-2

Which helicopter fell the fastest?

• They all fell at the same speed

• The helicopter with the longest wings

• The helicopter with the medium sized wings

• The helicopter with the smallest wings

Why does the helicopter with the smallest wings fall the quickest?

Gravity is what sort of force?

• A pull force

• A push force

• A twist force

• A centrifugal force

Answer explanation

An object dropped near Earth's surface falls to the ground because it is pulled down by the force of gravity that Earth exerts on the object.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What sort of force is Air Resistance

• A pull force

• A twist force

• A push force

• Centrifugal force

Answer explanation

Air resistance works as an opposing force for both falling objects and those moving on the ground.