Force, Friction and Gravity Quiz

What is the net force on this box?

• 30 N left
• 25 N right
• 5 N left
• 55 N right

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NGSS.MS-PS2-2

Which of the following has a net force of 0 Newtons?

• An asteroid moving at a constant speed through space 
• A car accelerating from a stop sign
• A box of dishes falling from a counter 
• A rocket taking off 

Which could be an example of an unbalanced force?

• A plate sitting on a dining table

• A ball at the top of a hill that is not moving

• A soccer ball in space, traveling at a constant speed

• A baseball that has just been thrown to home plate.

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NGSS.MS-PS2-2

When an object has a net force that is GREATER than 0 Newtons, the object is...

• balanced and still

• balanced and moving at a constant speed

• unbalanced and accelerating

• unbalanced and still

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NGSS.MS-PS2-2

In a tug of war game, the NET FORCE is 50N to the LEFT. The winning team pulled with a force of 200N to the left. How much force did the losing team pull with?

• 150N right

• 250N right

• 100N right

• 50N right

Tags

NGSS.MS-PS2-1

Which of these is an example of negative acceleration (or deceleration)?

• a bird taking off for flight
• a baseball released by a pitcher
• a car approaching a red light
• an airplane following a straight flight path

Changing direction is an example of a kind of

• acceleration

• speed

• velocity

• constant rate

If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same (velocity).

• True

• False

The force of gravity on a person or object on the surface of a planet is called

• terminal velocity.

• weight.

• free fall.

• mass.

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NGSS.MS-PS2-2

Balanced forces acting on an object

• always change the object’s motion.

• sometimes change the object’s motion.

• are not related to motion.

• never change the object’s motion.

Tags

NGSS.MS-PS2-2