Unbalanced Forces Guided Lesson

Unbalanced Forces Guided Lesson

Multiple Choice

Which object has the LEAST inertia?

Multiple Choice

forces that cause a change in the motion of an object

• unbalanced forces

• balanced forces

• fossil fuels

Multiple Choice

True or False: Unbalanced forces are EQUAL in magnitude and OPPOSITE in direction

• True

• False

Multiple Choice

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.

Multiple Choice

floating

• Balanced

• Unbalanced

Multiple Choice

sitting still in a chair

• Balanced

• Unbalanced

Multiple Choice

If there is any acceleration of an object (speeding up, slowing down, or changing directions) then the forces are...

• Balanced force(s)

• Unbalanced force(s)

Draw

Draw an arrow representing the frictional force on the car driving

Draw

Draw an arrow representing the direction of engine thrust on the car

Multiple Choice

If the girl kicks the ball upwards... what is true in the situation?

• the kick was an UNBALANCED force because it caused a CHANGE IN DIRECTION of the ball

• the kick was a BALANCED force because it caused a CHANGE IN DIRECTION

• the kick was an UNBALANCED force because it caused a CHANGE IN SPEED of the ball

Multiple Select

If the girl wants to stop the ball, she would need to...

• kick the ball as hard as she can in the same direction it was already moving

• kick the ball in the opposite direction it was moving with an equal force

• kick the ball softly in the direction it was already moving

Drag and Drop

If the player hits the ball in the same direction it is already moving., the ball's speed will ​

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and ​

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decrease

increase

reverse directions

continue in the original direction

Multiple Choice

If the force of gravity is greater than the force of lift then the airplane will...

• fall

• rise

• Move Forward

• move backward

Multiple Choice

If the force of lift is greater than the force of gravity the airplane will...

• fall

• rise

• Move Forward

• move backward

Multiple Choice

If the wings of a plane in flight produce a force of lift that is the same as the force of gravity, then the plane will —

• fall

• rise

• maintain a constant altitude, or height in the air

• crash

Multiple Choice

The thrust from the rocket creates a(n) ________ causing the spacecraft to accelerate.

• balanced force

• unbalanced force

• wormhole

Drag and Drop

The spacecraft's thrust is a(n) ​

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​ force and the force of gravity is a ​

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force.

Drag these tiles and drop them in the correct blank above

upward

downward

Multiple Choice

What is causing the boat to go forward?

• The backward force of the current

• The forward force of the current

• The baclward force of thrust from the propeller

• The forward force of thrust from the propeller

Multiple Choice

What force is causing the boat to slow down?

• The backward force of the current

• The forward force of the current

• The baclward force of thrust from the propeller

Multiple Choice

What happens if water current is greater than the force from the propeller?

• The motorboat will remain stationary

• The motorboat will move forward

• The motorboat will move backward

Multiple Choice

What happens if the propeller's force is greater than the force of the water current?

• The motorboat will remain stationary

• The motorboat will move forward

• The motorboat will move backward

Drag and Drop

When the golf club hits the ball it creates a(n) ​

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force affecting ​ the ​

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unbalanced

ball

balanced

golf club

Drag and Drop

Fill in the blank:



When the bat struck the ball it created a(n) ​

Placeholder

affecting the ​

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unbalanced force

ball

balanced force

bat

Multiple Choice

If the batter wanted only to stop the ball, he should...

• swing the bat with a force that is GREATER THAN the force of the pitch

• swing the bat with a force that is LESS THAN the force of the pitch

• swing the bat with a force that is EQUAL AND OPPOSITE to the force of the pitch

Multiple Choice

The picture represents a paper airplane flying in the air. What does "X" represent in the diagram?

• The upward force of gravity

• The downward force of gravity

• The upward force of lift

• The downward force of lift

Multiple Choice

The picture represents a paper airplane flying in the air. What happens if the force of uplift is .75N and the force of gravity is .50N? (Hint: the plane will move in the direction of the greatest force)

• It will fall

• It will rise

• It will maintain a constant altitude (height)

• It will do a flip

Multiple Choice

The picture represents a paper airplane flying in the air. What does "Y" represent in the diagram?

• The upward force of gravity

• The downward force of gravity

• The upward force of lift

• The downward force of lift

Drag and Drop

The force from the motor is a ​

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force and the force of friction is a ​

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force.

Drag these tiles and drop them in the correct blank above

forward

backward

upward

downward

Categorize

Options (6)

a car speeds up after a stop sign

a bus travels at a constant speed

a cat naps on the hood of a car

a driver swerves left to avoid a pedestrian

an asteroid floats through space

the girl strikes the baseball that was thrown from the pitcher

Categorize the following examples as balanced or unbalanced forces

Balanced

Unbalanced