WHEN AN ARCHER BENDS A BOW, WHAT TYPE OF ENERGY INCREASES IN THE BOW?

• GRAVITATIONAL
• ELASTIC
• KINETIC
• THERMAL

Tags

NGSS.HS-PS3-3

WHICH OF THESE DESCRIBES THE LAW OF CONSERVATION OF ENERGY?

• NO MACHINE IS 100% EFFICIENT
• ENERGY IS NEITHER CREATED OR DESTROYED
• THE ENERGY RESOURCES OF EARTH ARE LIMITED
• THE ENERGY OF A SYSTEM IS ALWAYS DECREASING

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

A spring with spring constant 16 N/m is compressed by 0.5 m. How much energy is stored in the spring?

• 1 J

• 0.25 J

• 2 J

• 16 J

Tags

NGSS.HS-PS3-1

Elastic potential energy is energy in an object that is compressed or __________.

• at rest

• stretched

• in equilibrium

The equation for spring force is

• F_sp = mgh

• F_sp = 1/2kx²

• F_sp = Fd

• F_sp = -kx

What equation is used to calculate elastic potential energy?

• E_{p = m g h}

• E_{p = 1/2 k x}²

• E_{p = F / E d}

Tags

NGSS.MS-PS3-2

The spring constant of an object tells you?

• What type of spring you are dealing with

• How long the spring will stretch or compress

• It gives you a value on how easy or hard it is to change the objects length.

• A spring constant gives you a number which tells you what material the spring is made of.

Calculate the elastic potential energy Leo puts into the trampoline mat when he stretches the mat (k= 473 Nm^-1) by 0.35 m.

• 2.887 J

• 28.97 J

• 82.775 J

• 12.76. J

Tags

NGSS.HS-PS3-1

A mass attached to a spring vibrates back and forth. At the equilibrium position, the

• acceleration reaches a maximum.
• velocity reaches a maximum.
• net force reaches a maximum.
• velocity reaches zero.

A mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy?

• kinetic
• mechanical
• gravitational potential
• elastic potential