Forces Flashcards
(31 cards)
What is a push caused by an engine called?
Thrust.
What is a force?
A force is a push, pull or twist.
What does a Newton Metre measure?
Mass.
When forces of an object are balanced what will happen?
The object will either remain stationary or will move at a constant speed.
When the forces of an object are unbalanced what will happen?
The object will speed up or slow down.
What does 100g of mass weigh in Newtons?
1 Newton.
What is Up-thrust?
The force pushing upwards on an object in a liquid.
What is Air resistance and drag?
A force acting against any object that is moving through the earths atmosphere.
What is friction?
The force between two surfaces sliding over one another, that causes them to heat up and wear.
How do you find out weight?
Mass times gravity.
How do you find out mass?
Weight divided by gravity.
How do you find gravity?
Weight divided by mass.
How do you find speed?
Distance divided by time.
How do you find time?
Distance divided by speed.
How do you find distance?
Speed times time.
What is special about objects that can float in water?
Their Newton weight is zero in water.
How do you find density?
Mass divided by volume
How do you calculate the extension of a spring?
New length- original length
What should you not use while explaining a experiment?
Fair test or equal test.
When is friction helpful?
When stopping a car.
When is friction unhelpful?
When you get rope or carpet burn.
What is the Earths gravity?
10.
What does mass measure?
The amount of matter in an object.
What is push and pull?
The force exerted away or towards another object.
