which class lever is stapler?

Which two simple machines does this device use to make work easier? A) An inclined plane and a pulley B) wheel and axle and a wedge C) Gears and a lever D ) A wheel and axle and a lever

If two teams have same force what will happen?

Which one of these would you use to remove the box from the truck? A) A lever B) An inclined plane C) A wheel and axle D) A pulley

how many inclined planes combines to form a wedge?

Some forces can act over a distance, and others can only act by contact. Which type of force can act only when two objects touch each other? A. gravitational B. frictional C. electrostatic

energy possesed by a moving object- kinetic or potential

mother asked Rina to help move some items from the hall closet to the garage. One item she wanted to move was a large box of old school books. Rina tried to lift the box, but could not pick it up. What force was Rina NOT able to overcome?

Which force is responsible when a comb rubbed in hair id brought near to paper pieces.

The head of an axe is wide at one end and pointed at the other to help cut or trim trees. The axe head is an example of A) a pulley. B a wheel and an axle. C) a wedge.

what is energy?

Which is an example of someone using a simple machine to do work? a. a boy runs across a football field b. a banker counts money c. a mother pushes a stroller up a ramp into a building d. a girl eats a sandwich

In class 2 levers what comes in the middle?