Force and Motion

Force and Motion

^{S8P3. Obtain, evaluate, and communicate information about cause and effect relationships between force, mass, and the motion of objects.}

Multiple Choice

• It's not moving.

• The velocity is constant

• The velocity is increasing.

• The acceleration is decreasing.

Multiple Choice

How does the acceleration of Cart A compare to the acceleration of Cart B?

• It is the same force, but in the opposite direction of cart B’s acceleration.

• It is twice the force, but in the opposite direction of cart B’s acceleration.

• It is the same force and in the same direction as cart B’s acceleration.

Multiple Choice

What forces are acting on the bag, and what are their relative magnitudes and directions?

• The force of gravity on the bag and the force of the hook. The force of gravity is larger than the force of the hook. The force of gravity points downward and the force of the hook points upward.

• The force of gravity and the force of the bag. The force of gravity is exactly balanced by the force of the bag. The force of gravity points downward and the force from the bag points upward.

Multiple Choice

What is the equation needed to solve for acceleration?

• A=fm

• A=m/f

• A=f/m

Multiple Choice

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Multiple Choice

What is the net force

• 5N ---->

• 5N<--------

• 0N

• 10N

Multiple Choice

For every action there is an equal and opposite reaction

• Newtons 1st Law

• Newtons 2nd Law

• Newtons 3rd Law

• None

Multiple Choice

Force= mass x Acceleration

• Newtons 1st law

• Newtons 2nd law

• Newtons 3rd law

• None

Multiple Choice

Resistance to an unbalanced force

• Mass

• Resistance

• Inertia

• Force

Multiple Choice

Which shopping cart will have more acceleration?  

• The empty shopping cart
• The shopping cart that's full
• They will be the same

Multiple Choice

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1
• Cart 2
• Cart 3 
• Cart 4

Multiple Choice

If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

Multiple Choice

What is Newton's 2nd Law?

• F=ma

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion.

• Friction

Multiple Choice

What is the net force?

• 40 N left

• 400 N right

• 0 N Balanced

• 40 N right

Multiple Choice

What happens when unbalanced forces act on an object at rest?

• the object remains at rest

• the object begins moving in an unpredictable direction

• the object begins moving in the direction of the net force

• the object begins moving opposite to the direction of net force

Multiple Choice

True or False. Acceleration of an object is directly proportional to the net force acting on it?

• True

• False

Open Ended

Markell, John Russell, and Daviyon were racing cars on a frictionless surface at different speed.

Markell 5 m/s

John Russell 7 m/s

Daviyon 10 m/s

Which car will require the greatest force to stop moving?

Open Ended

What is the difference between a constant speed graph and an increasing speed graph?

Multiple Choice

Which of the graphs show that a car is stopped?

• E

• F

• G

• H

Multiple Choice

Calculate the Net Force. 

• 60N, Left 
• 40N, Right 
• 0N
• 60N, Right

Multiple Choice

If these teams 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

Match the description to the graph:

"The car is traveling at a constant speed."

Multiple Choice

Match the description to the graph:

"The car is stopped."

Multiple Choice

the tendency of an object to resist a change in its motion

• acceleration
• inertia
• mass
• frame of reference

Multiple Choice

Acceleration: is the rate of change in ___________.

• speed
• distance
• velocity 
• displacement 

Multiple Choice

What are Newton's 3 Laws? 

• Law of Action-Reaction, Law of Inertia and Law of Velocity
• Law of Speed, Law of Action-Reaction, Law of Force and Acceleration
• Law of Inertia, Law of Force and Acceleration, and Law of Action-Reaction
• Law of Mass and Acceleration, Law of Action-Reaction, and Law of Inertia

Multiple Choice

If you increase the mass on an object, its acceleration

• decreases
• stays the same
• also increases
• stops

Multiple Choice

65mi/hr South is an example of...

• Speed
• Velocity
• Acceleration
• Direction

Multiple Choice

The force of gravity is dependent on an object's ________.

• mass

• volume

• temperature

• speed

Multiple Choice

Newton's second law states that greater the mass the more _________ will be needed to move the object.

• power

• force

• distance

• speed

Multiple Select

Which of the following represent the relationships in Newton's 2nd Law of Motion? Choose two.

• F = m x a

• a = F/m

• F = m/a

• a = F x m

Multiple Choice

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Multiple Choice

What is the net force for this situation?

• 17 N Right
• 17 N Left
• 3 N Right
• 3 N Left

Multiple Choice

This triangle is used to determine speed. 

• True
• False

Multiple Choice

Newton's second law states that greater the mass the more _________ will be needed to move the object.

• power

• force

• distance

• speed

Open Ended

Which wheel barrow will require MORE force to stop and why?

An empty wheel barrow or a wheel barrow with 5 bricks in it? Why?