Newton's Laws of Motion finalppt 0914

Multiple Choice

What is the relationship between mass and inertia ?

• Mass increases inertia

• Mass decreases inertia

• Inertia is independent of mass

• Inertia is only related to speed

Multiple Choice

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Multiple Choice

If the girl on the left suddenly stopped pushing, what would likely happen?

• The boy and the girl on the right would move to the right because of unbalanced forces.

• The boy would move to the left because of balanced forces.

• There would be no movement because there would be no change in forces.

• The girl on the right and the boy would both move to the left because of unbalanced forces.

Open Ended

Which would require more force to move a human or an elephant?

Multiple Choice

What happens to an object with a large amount of inertia?

• It moves faster

• It is easier to stop

• It is harder to change direction

• It has no effect

Multiple Choice

What is the effect of inertia on a passenger in a car when it stops?

• It causes the passenger to move backward

• It causes the passenger to continue moving forward

• It has no effect on the passenger

• It causes the passenger to stop immediately

Multiple Choice

What happens to your body when a car going 80 km/hour hits a brick wall?

• You stop immediately

• You keep moving at 80 m/hour

• You fly out of the car

• You bounce back

Multiple Choice

The image shows two identical wheelbarrows. One is loaded with bricks, and the other is empty.

Samantha pushes each wheelbarrow with the same force. Which wheelbarrow will be most difficult to push?

• Wheelbarrow 2 since it has less mass and, therefore, less inertia

• Wheelbarrow 2 since it has less mass and, therefore, more inertia

• Wheelbarrow 1 since it has more mass and, therefore, less inertia

• Wheelbarrow 1 since it has more mass and, therefore, more inertia

Multiple Choice

Looking at the image. Decide if this is balanced or unbalanced.

• Unbalanced

• Balanced

Multiple Choice

A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to stop?

• gravity acting on the wagon
• the mass of the wagon
• friction acting on the wagon
• the mass of the child

Multiple Choice

What happens to the bike when the applied force is greater than friction?

• The bike accelerates

• The bike decelerates

• The bike stops moving

Open Ended

List the three main types of friction we discussed .

Multiple Choice

The definition of momentum is

• Mass in Motion
• The size of an object
• The velocity of an object
• A comparison between two objects

Multiple Choice

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

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

Force always come in________

• waves

• triplets

• pairs

Multiple Choice

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident