Unit 4 Review

Two workers are working on building a table. Worker 1 applies a force of 20 N to a wooden board in order to slide it across the table to Worker 2. If the force of friction resisting the workers push is 6 N, what is the net force acting on the board

• 20 N

• 6 N

• 14 N

• 26 N

Tags

NGSS.MS-PS2-2

A comet moving 248 km/minute traveling in a north-to-south direction passed near Mars in 2005. Because the meteor was only 30 m wide and was 30,200 km above Mars surface, it is not visible without the aid of a telescope. Which statement describes the comets motion

• Its acceleration was 4.13 km/s²

• Its speed was 248 km/s southward

• Its velocity was 4.13 km/s southward

• Its acceleration was 248 km/s²

Tags

NGSS.HS-ESS1-4

A rocket has a mass of 800 kg. Which expression can be used to find a rockets acceleration if its engine created a net force of 40 N.

• 800 kg + 40 N

• 800 kg / 40 N

• 800 kg x 40 N

• 40 N / 800 kg

Tags

NGSS.MS-PS2-2

What does this graph represent?

• The object is returning to its starting point.

• The object is slowing down.

• The object has no motion.

• The object is traveling at constant speed.

What does this graph represent?

• The object is returning to its starting point.

• The object is slowing down.

• The object has no motion.

• The object is traveling at constant speed.

Tags

NGSS.MS-PS3-1

What does this graph represent?

• The object is returning to its starting point.

• The object is slowing down.

• The object has no motion.

• The object is traveling at constant speed.

Tags

NGSS.MS-PS3-1

What does this graph represent?

• The object is returning to its starting point.

• The object is slowing down.

• The object has no motion.

• The object is traveling at constant speed.

Jessica and Nick measure the acceleration of a soccer ball being acted on by varying forces, they record the data in the table shown below. According to the data table, how much force is acting on the soccer ball when they measure an acceleration of 1.2 m/s²?

Tags

NGSS.MS-PS2-2

The diagram below shows two different forces acting on a skater. The total mass of the skater is 50 kg. What is the acceleration and direction of the skater?

Tags

NGSS.MS-PS2-2

What was the average speed during the time represented in the graph? (round to the nearest hundredth)

• 0.92 m/s

• 1.09 m/s

• 2 m/s

• 1 m/s

Tags

NGSS.MS-PS3-1