physics

what is weight

• the force with which the earth pulls the object toward its center

• the matter contained by an object

• the force at the height from the ground

• it is an energy store

which one of these are types of energy store(put 2)

• chemical energy

• driving force of engine

• tension

• thermal energy

speed is the_____________________________________in a certain time

what is the law of conservation of energy?

• it says that energy can neither be created nor be destroyed but it can change from one form to another

• it says that all gravity is a force

• it tells us that weight is the force with which the earth pulls the object towards its center

what is another name for weight?

• force due to gravity

• mass

• magnetic force

• electrostatic force

what is the unit of mass?

• kilogram

• newtons

• m/s

• km/h

I want to measure the mass of an object, what instrument do I use?

• force meter

• newton meter

• beam balance

• weight meter

what is the equation to find a weight of an object?

• w=gxt

• w=mxg

• w=txd

• w=dxg

what is the value of g on the earth surface?

• 13 m/s2

• 10m/s2

• 32 m/s2

• 18m/s2

does mass change from place to place?

• no

• yes