Force and Friction

A boy rides a skate board down a hill. Eventually the skate board stops. Which is most responsible for causing the skateboard to stop?

• gravity acting on the skateboard

• friction acting on the skateboard

• the mass of the skateboard

• the mass of the boy

Tags

NGSS.MS-PS2-2

A book falls off the desk. What moves the book towards the floor?

• mass

• friction

• gravity

• speed

Tags

NGSS.MS-PS2-4

What will most likely stop an object in motion?

• mass

• force

• acceleration

• deacceleration

Tags

NGSS.MS-PS2-2

How would the absence of friction affect a steel ball traveling on a long straight path

• steel ball's speed would decrease

• steel ball's speed would increase

• steel ball would stop immediately

• steel ball would remain at a constant speed

Tags

NGSS.MS-PS2-2

What will happen to the book if no other forces act upon it?

• book will stay at rest

• book will begin to move

• mass of the book will increase

• gravity on the book will increase

How does a wagons motion change when additional force is applied?

• as force increases, acceleration increases

• as force increases, acceleration decreases

• as forces increases, the wagon's mass changes

• as forces increases, the wagon direction changes

Tags

NGSS.MS-PS2-2

Which is a push or pull that acts on an object?

• force

• speed

• inertia

• momentum

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which force does an airplane have to overcome to stay in flight?

• friction

• gravity

• inertia

• momentum

Tags

NGSS.MS-PS2-4

A person rolls a ball on a flat surface that suddenly slopes downward. Which most likely describes the motion of the ball?

• ball stops when is reaches the downward slope

• ball speeds up as it travels on the downward slope

• ball slows down as it travels on the downward slope

• ball changes directions as it travels on the downward slope

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-5

A girl placed a leaf in a stream. After 5 minutes, the leaf moved 100 yards away from the girl. Which best explains why leaf changed it position?

• the pulling force of the wind

• the pushing force of the stream

• the pulling force of the leaf against the water

• the pushing force of the leaf against the water

Tags

NGSS.MS-PS2-2