Unit 3 Quiz 1 Review

In an energy field, the magnitude or strength of the energy is inversely proportional to the _____ squared.

• Distance

• Mass

• Temperature

• Force

An object's _____ may be  expressed in kph or m/s along with its direction.

• Push

• Acceleration

• Gravity

• Velocity

A change in velocity is _____.

• Speed

• Acceleration

• Gravity

• Inertia

Two objects collide and travel together after in a(n) _____ collision.

• Elastic

• Bounceable

• Reboundable

• Inelastic

A force generated by an underwater earthquake applied to oceans waves over a period of time changes the wave's momentum, this is referred to as _____.

• velocity

• time

• force

• impulse

Two objects that do not remain in contact after they collide have a(n) _____ collision.

• Inelastic

• Bounceable

• Reboundable

• Elastic

A tsunami wave hits a stationary shell on the beach with great momentum. After the collision, the shell moves with the wave. The collision is _____.

• Elastic

• Bounceable

• Reboundable

• Inelastic

A roofing nail falls from the top of a house. If the nail took 2 seconds to reach the ground, what formula would you use to find the height of the house, assuming there is no air resistance?

• d=m/v

• F = G(m1*m2) / d^2

• v = d/t

• d = 1/2gt^2

A flowerpot is knocked off the ledge of a five-story building. What is the height the ledge if it takes the flower pot 2.75 seconds to hit the ground? Assume there is no air resistance.

• 24 m

• 37.1 m

• 39.2 m

• 13.4 m

On Mar. 11, 2011, a horrific tsunami hit northern Japan and the Fukushima Daiichi nuclear plant, which due to severe damage, emitted radiation. Knowing the magnitude of radiation 1 km away, you could calculate the magnitude of the radiation energy 30 km away by using the _____ law.

• inverse-square

• inverse-division

• directly multiplication

• 
  

  direct division