Question

A construction worker uses a hammer to drive a sharp nail into a concrete wall. What two simple machines is the construction worker using when he does this task?
A.
a lever and a pulley
B.
a screw and a wheel and axle
C.
an inclined plane and a pulley
D.
a wedge and a lever

Answer 1

A construction worker uses a hammer to drive a sharp nail into a concrete wall. What two simple machines is the construction worker using when he does this task-(D) a wedge and a lever

Explanation:

Simple machines are the tools an individual uses in his day to day life in order to make its work simpler.

For Example: Axles and wheel  make it simple to carry a heavy object in a shopping cart.

A hammer is a type of  lever,and is also a type of simple machines.A hammer can be defined as a heavy rigid bar moves around a fixed point ,that point is called fulcrum .

Wedges is also a form of  simple machine and the  inclined plane forms its  foundation. A wedge can be referred to as the sharp edge of an inclined plane.They are used to level out a structure of an object

Thus we can say that  A construction worker uses a hammer to drive a sharp nail into a concrete wall. What two simple machines is the construction worker using when he does this task-(D) a wedge and a lever