S2 Exam

Energy is:

• The ability to do work or give off heat

• The ability to calculate forces.

• The ability to evolve

• The ability to measure temperature

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Conservation of momentum explains that:

• Total energy of a system stays the same

• The amount of matter in a system does not change

• The momentum in a system stays the same

• The total velocity of a system stays the same

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NGSS.HS-PS2-2

Transfer of thermal (heat) energy through convection requires:

• A fluid

• A solid

• A desk

• A metal

Kinetic energy is a measurement of the:

• Energy stored in position

• Energy of movement

• Energy stored in a spring

• Energy stored in chemical bonds

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NGSS.MS-PS3-1

What is the impulse of a 4 kg object accelerating from 10 m/s to 12 m/s?

• 8 kg m/s

• 40 kg m/s

• 48 kg m/s

• 88 kg m/s

Tags

NGSS.HS-PS2-2

Power is measured in Watts, this can also be written as:

• Nm/s

• Nm

• N/s

• Nm/s^2

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NGSS.MS-PS3-4

In kinetic energy, if the velocity is doubled, the energy is:

• Stays the same

• Goes up by a factor of 2

• Goes up by a factor of 4

• Not enough information

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

When two objects undergo an elastic collision, the total momentum will:

• Increase

• Decrease

• Stay the same

• Not enough information

Tags

NGSS.HS-PS2-2

Change of momentum is also known as:

• Force

• Impulse

• Work

• Power

Tags

NGSS.HS-PS2-2

The units for momentum are:

• kg*m/s

• J

• N*s

• all of the answers

Tags

NGSS.HS-PS2-2