Irwin Forces and Motion

Which investigation will best test the effects of gravity on moving objects?

• pencils falling from the same height

• balloons floating upward from the same height

• a bicycle speeding up on a flat surface

• a ball slowing down on a flat surface

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A weight, suspended from a pole, is held in place as shown. When the weight is released, it moves in the direction shown. Which of these would cause the weight to move in this direction?

• electric force

• magnetic force

• friction

• gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

How would the absence of friction affect a marble traveling on a long, straight path?

• The marble’s speed would decrease.

• The marble’s speed would increase.

• The marble would stop immediately.

• The marble would remain at constant speed.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Movers slide a box down the ramp of a truck. What helps slow the box as it slides to the bottom of the ramp?

• friction

• gravity

• inertia

• magnetism

Tags

NGSS.MS-PS2-2

What keeps the Earth in orbit around the Sun?

• inertia of the moon

• location of earth’s orbit

• speed of Earth’s rotation

• Sun’s gravitational pull

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Marcus traveled west for 2 hours at 50 mph. He then traveled east for another hour at 25 mph. How many total miles did Marcus travel? (speed = distance ÷ time)

• 25 miles

• 75 miles

• 125 miles

• 150 miles

A train travels 150 miles in 2 hours. What is the average speed of the train? (average speed = distance ÷ time)

• 30 miles per hour

• 50 miles per hour

• 75 miles per hour

• 100 miles per hour

Which is a correct statement about the object shown in Graph W?

• The object speeds up during the trip.

• The object slows down during the trip.

• The object travels at a constant speed during the trip.

Tags

NGSS.MS-PS3-1

The speed of a bowling ball is found to be 3 meters per second. How far would the bowling ball roll in 10 seconds? (speed = distance ÷ time)

• 5 meters

• 15 meters

• 30 meters

• 60 meters

The graph below shows the motion of a student riding a bike.

• between seconds 1 and 2

• between seconds 3 and 4

• between seconds 6 and 7

• between seconds 9 and 10

Tags

NGSS.MS-PS3-1