1.which of the following statement is NOT true? Gravity _________.
A.draws object toward the center of tge earth B.determines your weight here on earth C.pushes an object upward D.pulls object downward

2.A boy sits on a grassy slope. Which of these stops him from sliding donw?
A.friction. B.gracity C.magnetic force D.weight

3.where is the gravitational force directed as you stand on the floor?
A.backward B.downward C.forward D.upward

4.What force do the brakes on a bicycle produce to stop the bike?
A.friction B.gravity C.magnetism D.all of the above

5.Which shows that sometimes friction is undesirable?
A.pushing furniture B.lighting a matchstick C.walking on wet floors D.using the brakes when approaching a stoplight





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