1)It is a push or a pull
a. gravity
b. motion
c. friction
d. force
2) Which flor has the greatest friction?
a.polished
b.wet
c. tiled
d.sandy
3. Which of the following can reduce friction?
a.making the surface rough
b. using rollers or wheels
c.putting lubricant
d.using rubber
4. What in factors can affect gravitational pull?
a time and distance
b.force and distance
c.time and mass
d.distance and mass
5. What causes moving objects things to slow down?
a.gravity
c.friction
b. force
d. magnet