Motion Test Review

Motion is a change in

• speed

• velocity

• position

• time

What is the formula for speed?

• final velocity - initial velocity /

  time

• mass x acceleration

• distance/ time

• displacement/ time

Tags

NGSS.MS-PS3-1

What is the definition of inertia?

• An object being too heavy to move

• The attractive forces between all things with mass

• When forces are unbalanced an object will remain stationary

• An object resistance to a change in motion

What is weight?

• The amount of matter something is made up of

• the force of gravity on an object

• measured in grams or kilograms

• The attractive forces between objects with mass

Tags

NGSS.MS-PS2-4

Two people are playing tug of war. Person 1 is pulling to the right with 20 N of force, the other person is pulling to left with 50 N of force. What is the Net Force and direction of the rope?

• 30 N to the left

• 30 N to the right

• 70 N to the left

• 70 N to the right

Tags

NGSS.MS-PS2-2

How much time would it take for an airplane to reach its destination if it traveled at an average speed of 500 km/hr for a distance of 1000 km? 

• 5000 hr

• 5 hr

• 5000 km

• 2 hr

Two animals of different mass are falling.

What force is missing if BOTH animals fall at the exact same velocity?  

• Gravity

• Air Resistance

• Sliding Friction

• Static Friction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Marie is standing in an elevator, which is not moving. She has stepped on a scale in the elevator and observes that the scale reads 294 N. Then, the elevator begins going up with an acceleration of 2 m/s².

What will be the reading on the scale as Marie accelerates upwards?

• • It will be less than 294 N, because the total force needed to accelerate her up is less than the force of gravity.  

• • It will be less than 294 N, because the total force needed to accelerate her up is more than the force of gravity.

• • It will be more than 294 N, because the total force needed to accelerate her up is less than the force of gravity.  

• • It will be more than 294 N, because the total force needed to accelerate her up is more than the force of gravity.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Astronauts appear weightless while working in the International Space Station because...

• they have very little mass when in outer space.

• they are in a state of free fall. 

• they have gravitational attractions to the sun and moon. 

• there isn't any gravity in outer space. 

Air being let out of a balloon so that it flies around the room is an example of which law?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law