Unit 3 Test Review

Deep Space 1 was a spacecraft powered by an engine that gave off xenon particles to change velocity. It had a mass of 500 kg. Which expression can be used to find the spacecraft’s acceleration if its engine created a net force of 0.10 N?

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Tags

NGSS.MS-PS2-2

When a space shuttle was launched, the astronauts on board experienced an acceleration of 29.0 m/s². If one of the astronauts had a mass of 60.0 kg, what net force in newtons did the astronaut experience?

• 1740N

• 2.07N

• .48N

Tags

NGSS.MS-PS2-2

A student uses a magnet to move a 0.025 kg metal ball. The magnet exerts a force of 5 N, which causes the ball to begin moving. What is the acceleration of the ball when it begins to move?

• 200 m/s²

• 0.125 m/s2

• 5 m/s²

• 5.025 m/s²

Tags

NGSS.MS-PS2-2

A toy train engine rests motionless on a track. One student begins pushing the engine to the right with a force of 2 newtons. At the same time, another student begins pushing the engine to the left with a force of 5 newtons. Which of the following best describes the resulting motion of the engine?

• It travels left at a constant speed.

• It travels left at an increasing speed.

• It travels right at a constant speed.

• It travels right at an increasing speed.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A car travels at a constant speed of 70 km/hr for 15 minutes. The car decreases its speed from 70 to 40 km/hr over the next two minutes and then continues to travel at a constant speed of 40 km/hr for the next 5 minutes.

Which of the following graphs best represents the car's motion during the given time period?

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Tags

NGSS.MS-PS3-1

The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity.

The pickup truck has a changing velocity because the pickup truck —

• can accelerate faster than the other two vehicles

• is traveling in the opposite direction from the other two vehicles

• is traveling on a curve in the road

• needs a large amount of force to move

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit the ball. The bat applies a 10-newton force to the ball.

Which statement correctly describes the reaction force between the bat and ball?

• The reaction force is the force that causes the ball to move toward the bat.

• The reaction force is the force applied to the bat by the player holding the bat.

• The reaction force is the force that pulls the ball toward the ground.

• The reaction force is the force of the ball on the bat.

Tags

NGSS.MS-PS2-1

A bakery delivery van is transporting a wedding cake across town to the location of a wedding reception. Which of Newton’s laws best explains why the driver of the van would want to be extra careful when making turns and stops along the route?

• The law of action-reaction

• The law of force and acceleration

• The law of inertia

• The law of conservation of mass

Observe the image above. A magician performs a trick where the tablecloth is quickly removed from the table, while all of the items on the table stay in the same place. Which of Newton’s laws best describes the behavior of the tablecloth and the glass on the table?

• Tablecloth: Law of force and acceleration; Glass: Law of inertia

• Tablecloth: Law of inertia; Glass: Law of force and acceleration

• Tablecloth: Law of force and acceleration; Glass: Law of action-reaction

• Tablecloth: Law of action-reaction; Glass: Law of force and acceleration

Tags

NGSS.MS-PS2-1