CP Physical Science Forces Test Review

1. Newton's 1st law states that an object

• at rest will remain at rest unless acted on by an outside force.
• will continue moving at the same velocity unless an outside force acts on it.
• will continue moving in a straight line unless an outside force acts on it.
• all of these statements are true.

2. A 10-N force and a 30-N force act in the same direction on an object. What is the net force on the object? (Hint: You may draw a FBD on scratch paper to help you decide.)

• 40 N
• 30 N
• 20 N
• 10 N

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NGSS.MS-PS2-2

3. If the force of gravity (weight) on a balloon is 3000 N, and the air resistance is 3300 N, in which direction is the net force acting? (Hint: You may draw a FBD on scratch paper to help you decide.)

• upward
• downward
• there is no net force

Tags

NGSS.MS-PS2-2

4. In which case will the object have the greatest acceleration?

• A
• B
• C
• D

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

5. In which case will the object have the least acceleration?

• A
• B
• C
• D

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NGSS.MS-PS2-2

6. How much does a 2 kg bag of nails weigh?

• 19.6 N
• 9.8 N
• 7.2 N
• 4.8 N

Tags

NGSS.MS-PS2-2

7. A girl and a boy pull in opposite directions on strings attached to each end of a spring scale. Each child exerts a force of 20N. What is the NET FORCE acting on the scale?

• 0 N
• 10 N
• 20 N
• 40 N

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NGSS.MS-PS2-1

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8. An object being pulled across the floor is moving at a constant velocity. Which of the following statements is true?

• There are no forces acting on the object.
• The net force on the object is zero.
• There is no frictional force acting on the object.

9. A change in the force of gravity acting on an object will affect the object’s

• mass
• density
• weight
• inertia

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NGSS.MS-PS2-2

10. If the force acting on an object cart is doubled, what happens to the acceleration of the cart?

• acceleration doubles
• acceleration doesn't change
• acceleration triples
• acceleration decreases by half

Tags

NGSS.MS-PS2-2