Force and Motion

A moving truck ramp is an example of

• a way to reduce force to load the truck

• a machine to increase the distance traveled to reduce the force needed

• an inclined plane

• all of the above

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

The following are examples of forces that do not use direct contact:

• friction and contact
• friction and pulling
• gravity and magnetism
• gravity and friction

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The tendency of an object to remain at rest or to keep moving in a straight line unless acted upon by a force is called

• velocity
• inertia
• acceleration
• crazy

Tags

NGSS.MS-PS2-2

In a game of Tug of War, the girls use 600 N of force to the left and the boys use 200 N of force to the right.   Which describes the game?

• forces are balanced and there is no motion
• the net force is 800 N and the boys win
• the net force is 400 N to the right
• the net force is 400 N to the left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following best describes velocity of the pen Mrs. Simpson throws across the room?

• 10 m/s
• 10 m/s west
• 10 ft north
• really surprising stuff

When I tried to pull a toy away from my dog, we both pulled really hard and there was no motion.  What does this say about our forces?

• they were balanced
• they were unbalanced
• they had a net force of 10 N
• we are weak

The force on object exerts on another when they rub against each other is called

• gravitational
• magnetic
• friction
• uncool

A reference point would be useful if...

• you needed to lift a heavy object
• you needed to tell if something was in motion
• you needed to increase the velocity
• you needed to bring Mrs. Simpson presents

Which of the following is considered a contact force?

• the force of a magnet holding paper on a dry erase board
• the gravitational pull of the Sun
• friction between your tennis shoe and the ground
• the force between charged particles

An object in motion that is is acted upon by an UNBALANCED force will...

• stop.
• start.
• change direction.
• change the motion of the object in some way.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2