Retake science test

15. What is acceleration of the box in the picture to the right?

12 m/s2

22. What is the net force on the block to the right?

2 N left

23. If the block in the picture to the right has an acceleration of 1 m/s2, what would be the block's mass?

2 kg

12. A 500 N force is applied to a 25 m/s2 object. The mass of the object is

20kg

16. What is the weight of the box in the picture to the right?

245 N

20. A man weighing 800 N is standing on a chair. In order to support the man, what force is the chair exerting?

800 N up

14. When two forces on the same object are equal and opposite, these forces are called?

Balanced

25. In the picture to the right, if the card were quickly pulled off the cup like the arrow suggests, what property would explain why the coin falls into the cup rather than moving with the card?

Inertia

9. An astronaut is planning a trip to a newly discovered planet. According to the law of universal gravitation, the astronauts weight on the new planet will be greater than his weight on earth if:

The new planet has more gravity than earth

24. Which of the doll best describes how a swimmer moves through the water?

The swimmer pushes backwards on the water and the water pushes with an equal but opposite force back on the swimmer

18. Which two quantities are measured in the same units?

Weight and forces