1. Nena get two pieces of bond paper, she crumpled one piece of it. She holds them in the same height and drop at the same time. What do you think will happen and why?

A. The crumpled paper will reach the ground first because of the gravity
B. The uncrumpled paper will last to fall because it is blown by the air
C. The two paper will reach the ground at the same time
D. None of the above

2. Nilo was playing a ball. First, he rolled the ball going up the slide. Then he rolled the ball going down the slide, and he rolled the ball on the flat ground. In which situation did Nilo needed more force to roll the ball?

A. Going up the slide because it is pulled by the gravity.
B. Going down the slide because it is pulled by the gravity.
C. On the ground because it is smooth and plain
D. All of the above