8.7 A

According to Newton’s first law, what happens to the riders just after the cart turns right to follow the track?

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An appliance worker pushes a 15.5 kilogram refrigerator across a smooth floor with a net force of 5N. What is the approximate acceleration of the refrigerator? Round to the nearest hundredths.

• 0.32 m/s²

• 0.45 m/s²

• 0.29 m/s²

• 0.50 m/s²

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NGSS.MS-PS2-2

A race car is powered with a 1500 horsepower engine as it races down a track. It has a mass of 250kg. It travels down the racetrack with a net force of 500N. What is the correct formula to use to calculate the acceleration of the car down the racetrack?

• Acceleration = mass / force

• Acceleration = mass x force

• Acceleration = force / mass

• Acceleration = mass + force

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NGSS.MS-PS2-2

A horseshoe has a mass of 4.1 kilograms. What net force, to the nearest whole newton, will a player need to apply to accelerate the horseshoe at a rate of 2.5 m/s²?

• 10 N

• 8 N

• 12 N

• 15 N

Tags

NGSS.MS-PS2-2

Six airplanes are flying with a constant speed before each airplane experiences an unbalanced force of 10N. Which 2 airplanes have the greatest acceleration? Select 2 correct answers.

• Airplane 1 and Airplane 2

• Airplane 2 and Airplane 6

• Airplane 3 and Airplane 5

• Airplane 4 and Airplane 6

Tags

NGSS.MS-PS2-2

A hockey player hits five different pucks with the hockey stick. The mass of each puck is shown below. Which puck has the greatest applied force to lowest applied force?

• Puck 4

• Puck 2

• Puck 1

• Puck 5

• Puck 3

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

• No longer tilted on its axis

• Stopped rotating on its axis

• Took an additional month to orbit the Sun

• Revolved around the Sun in the opposite direction

Tags

NGSS.MS-ESS1-1

Shadows growing longer and shorter are evidence of  ____________

• Earth's rotation

• Earth's tilt

• Earth's revolution

• Earth's weather

Tags

NGSS.MS-ESS1-1

Why is the Equator warmest?

• Because it is closest to the sun.

• Because it receives the most direct sunlight

• Because no clouds form here.

• Because it is far from the sun

Tags

NGSS.MS-ESS2-6

Which of the following best explains why City 3 experiences the smallest change in day length between summer and winter out of the four cities shown in the diagram below?

• Earth rotates on its axis once every 24 hours

• City 3 is located close to the equator

• Earth completes one revolution of the Sun every 365 days

• City 3 is closest to the Sun during the North Hemisphere’s winter

Tags

NGSS.MS-ESS1-1