Physics 1
Four factors that affect braking distance negatively
Speed
Mass
Tyres
Brakes
Icy
Wet
If we stretch plasticine does it deform elastically or inelastically?
Inelastically
What three stars will our sun become at the end of its life?
Red giant
White dwarf
Black dwarf
What is the range of these 4 numbers? 5, 7, 10 and 11
6
What is 0.0025 in standard form?
2.5x10-3
Mass x Acceleration =
Force
Spring constant = Force / ?
Extension
Which planet orbits the sun the fastest?
Mercury
What is the uncertainty of these 4 numbers? 5, 7, 10 and 11
3
What is conserved in a collision?
Momentum
Force / Area =
Pressure
A straight line passing through zero shows what type of relationship?
Directly proportional
I measure the current passing through an LDR and get 3 different values spread around the mean. What type of error will this be?
Random
Systematic
Zero
Random
What do we call sound so high we can't hear it?
Ultrasound
What do air bags do to the time taken for a person's head to slow down?
Increases it
Stopping distance = Braking distance +
Thinking distance
Elastic potential energy =
1/2 spring constant x extension2
I always get weighed on a morning. What type of error am I trying to reduce?
Random
Systematic
Zero
Random
Above what frequency can we not hear?
20 000Hz
Why do we take an average?
To reduce the effect of random errors
What do also we call a N/m2
A Pascal
Gravity pulls in on a star what force provides the opposite balancing force that keeps it stable?
Fusion
The scales always say 1 pound before I stand on them. What type of error is this?
Random
Systematic
Zero
Zero
What can we use ultrasound for in medicine?
Cleaning teeth
Prenatal scans
Breaking down kidney stones
Monitoring heart / blood flow
What type of wave has areas of compression and rarefaction?
Longitudinal