1. Donna is cleaning the house. how can she reduce friction between the bottom or feet of furniture and floor so that she can easily get rid and dirt underneat?

a. but applying wax on the floor
b.by putting wheels or rollers in the bottom or feet of furniture
c. by smoothing the floor
d. by keeping furniture on their place


2.roxer throw the ball on the floor. the ball rolls fast then suddenly slow down and stop. what makes the rolling ball slow down and stop?

a. air resistance
b. brakes
c. friction
d. gravity

3.harry love riding a bicycle. what force do the brakes on a bicycle to stop the bike?

a .pitch
b .gravity
c .friction
d. magnetism

4 pol and bon play basketball . pol threw the ball up to shoot and the ball fell afterwards. what caused the ball to fell

a. acceleration
b. gravity
c. speed
d. wind

5. what happens when you go againts the gravity?

a. it has accelerated motion
b. it has decelerated motion
c. it can possibly stop moving
d. it can go up
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