Physical Sci - Prep for Collisions Quiz

What does Newton's Second Law say?

Select ALL that are true

• The force on an object is defined by the mass of the object and its acceleration rate.

• The acceleration rate of an object is defined by the force on the object and the object's mass.

• F = m * a

• Energy cannot be created nor destroyed.

• Gravity causes masses to attract.

Tags

NGSS.HS-PS2-1

Crumple zones in a car make it safer in a crash because...

• It takes more time to stop the car in a crash. More time means less acceleration.

• It takes less time to stop the car in a crash. Less time means less acceleration.

• The car's energy is destroyed as the zone crumples.

• Momentum is converted into kinetic energy.

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS2-1

NGSS.HS-PS2-3

The "best" egg carts were the ones that...

• stopped the egg suddenly.

• stopped the egg over the largest amount of time.

• were really rigid.

• were flimsy and collapsed.

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS2-3

Since F = m*a.... a ___________ acceleration would result in a ___________ force.

• small -- large

• large -- small

• small -- small

Tags

NGSS.HS-PS2-1

Since F = m*a and a = (change in vel) / time

a ______ time would result in a ______ acceleration and therefore a ______ force.

• small -- large -- small

• large -- small -- small

• small -- small -- small

• large -- large -- small

Tags

NGSS.HS-PS2-1

What is acceleration?

• the speed of an object.

• the velocity of an object.

• the rate an object's velocity is changing.

• the rate an object's energy is increasing.

Tags

NGSS.HS-PS2-1

Which of the following ARE accelerations and would therefore require force?

Select ALL that are correct

• speeding up

• slowing down

• turning or changing direction

• constant speed

Tags

NGSS.HS-PS2-1

What are 3 everyday examples how time has an effect on force?

Remember, we looked at a slideshow with a bunch of examples.