10 Physics

Reaction time involves...

• The length of time taken for a person or system to respond to a given stimulus or event

• How hard you press on the brake when you see a kangaroo jump out in front of you

• The distance that you travel while you are reacting to a stimulus

• The speed at which you are travelling at

Reaction distance is the distance travelled while reacting to the stimulus or event.

• True

• False

The formula to calculate Reaction Time is...

• f=ma

• d=v x t

• t= the sq root of 2 x d/981

• t=d/981 x 2

What is the key bodily function that triggers a reaction to a stimulus?

• Digestion

• Urination

• Reflexes and Reaction Time

• Shock

Distance and Displacement are similar, but different. What is the key difference between the two?

• Distance is for year 8s and Displacement is for smart year 10s

• Direction provides the direction and the distance

• Displacement provides the direction and the distance

• Displacement is when you are lost and need to work out how to get home

When looking at displacement and direction, one is a scalar quantity and one is a vector quantity. What does this mean?

• One is cooler than the other

• One is more informative than the other, giving size and direction

• One is less important than the other

• Displacement is a scalar quantity

If Miss Humphries walked from her office to the staff room to get a coffee and back to her desk what would her displacement be?

• 0m

• 20m

• 1km

• 20m there and 20m back

If Miss Humphries drove home from school in a northerly direction for 50 kms, what would her distance and displacement be?

• Distance is irrelevant

• 0km

• 50kms

• 50kms North

The correct formula to calculate distance is...

• d= v x t

• a= d / t

• a= v-u/t

• f=ma

When relating to physics, speed is refered to as...

• Measure of how quickly something moves.

• How slow the internet is

• Displacement and Distance

• Reflexes

Tags

NGSS.MS-PS3-1