Forces I
Forces II
Speed & Acceleration
Earth Science
Surprise
100
Unit of Force
Newton (N)
100
What is the formula to find out Force?
Force = Mass x Acceleration
100
What is the formula to calculate speed or velocity?
velocity = distance / time
100
What is the name of the sphere that contains water?
Hydrosphere
100
Which country is pizza originally from?
Italy
200
What is the First Law of Newton?
Law of Inertia
If something is not moving it will keep at rest unless there isa force acting uppon it. If the object is moving, it will keep moving at a constant speed until a force changes this.
200
What is the third Law of Newton?
For every actions there is an equal reaction
200
What is the main unit for velocity in physics?
m/s or ms-1
200
Where is air pressure higher, up in the mountains or at sea level?
At sea level
200
Who wrote Harry Potter?
J.K. Rowling
300
What is the name of the force exerted by gravity?
Weight
300
What is the Second Law of Newton?
Explain how factors relate with each other
F = m x a
If the mass increases so does the force applied
If the acceleration inreases so does the force applied
If we keep force the same and mass increases, acceleration needs to decrease
300
What is this graph showing?
Constant speed
300
Where is water pressure higher, at sea level or deep underwater?
Deep underwater
300
What is the only mammal that can truly fly?
Bat
400
What is the name of the force that is opposite to weight in a floating object?
Buoyancy
400
An astronaut on the Moon has a mass of 70 kg. Does the astronaut's mass change on the Moon? Explain.
No. The astronaut's mass stays 70 kg, but their weight decreases because the Moon's gravity is weaker.
400
What is this grpah showing?
Positive Acceleration
400
What is Pressure? Give a unit in which we measure pressure?
The force applied per surface area.
Bar, Atmosphere, mmHg, psi
400
Which instrument has 88 keys?
Piano
500
What will happen to the cyclist if wind blows from the back?
It will accelerate
500
A truck and a small car collide. Which vehicle experiences the greater force during the collision?
They experience the same force (equal and opposite forces – Newton's Third Law).
500
Two cars start from rest. Car A reaches 20 m/s in 5 seconds. Car B reaches 20 m/s in 10 seconds. Which car has the greater acceleration, and by how much?
Car A.
- Car A: 4 m/s²
- Car B: 2 m/s²
- Car A's acceleration is twice as great.
500
By how much does water pressure increase every 10 metres of depth?
By 1 bar or 1 atmosphere
500
What is the largest organ in the human body?
The Skin