Why do we need to convert mass into weight?
Weight is mass interaction with gravity, which is the accurate force the mass exerts
State the unit to measure forces
Newtons (N)
Name point B on the lever
Pivot/Fulcrum
A balloon is squeezed, what happens to the air pressure?
It increases
State the equipment to measure forces
Newton Meter
When a car is accelerating, the thrust is _________ than the drag
more than
The point where the extension of the spring no longer increases proportionally to the weight.
Elastic limit
Describe the speed in this distance time graph
Stationary, Not moving
When a car is slowing down, the thrust is _________ than the drag
less than
When a car is moving at a steady speed, the thrust is _________ to the drag
equal to
What will happen to the box?
Move to the right
Name point A on the lever
Load
A box with a cat is 50kg what is the weight of the box in N?
500N
Boats float because _____________ are colliding with the bottom of the boat
water particles
Things float because _________ is at least equal to the weight of the object
Upthrust
Explain how a balloon maintains its shape.
Air particles are colliding with the balloon wall
Name the principle shown in the diagram above
Archimedes principle
A spring is 2cm long, after hanging a 2N weight, it becomes 3.5cm long. What is the extension of the spring
1.5cm
Name of the physics law related to springs
Hooke's Law
A spring is 2cm long, after hanging a 2N weight, it becomes 3.5cm long. How long is the spring if a 4N weight is hung on?
5cm (2cm+3cm)
In a cool morning, the balloon becomes smaller, what happened to the air pressure in the balloon in the cool weather?
Decreases
How far did the car travel in this chart? (distance)
100km
What is the weight of the water displaced when the block is fully immersed in water?
2kg
Name point C on the lever
Effort