2.)which is best used to keep a heavy frame on the wall?
a.nail
b.pulley
c.lever
d.glue
3.)father needs to several left pails of wet cement from the ground to the second floor. what simple machine will he use?
a. inclined plane
b.pulley
c.lever
d.wheel and axle
4.)which of these is used to roll a barrel up a truck?
a.bolt
b.inclined plane
c.lever
d.wheel and axle
5.)which of the following simple machine is a speed multiplier?
a.inclined plane
b.lever
c. wedge
d.wheel and axle
need ko po help❣️​