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Biblioteka

Newton's Laws exit ticket

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Pitanje 1
1.

A force of 1 N is the approximate force needed to lift ....

Pitanje 2
2.

What law is described by:

"An object continues to remain in a state of rest or uniform motion unless an unbalanced force acts on it"

Pitanje 3
3.

What is another name for Newton's first law of motion?

Pitanje 4
4.

A 2 000 kg car is sitting at rest in a parking lot.

A bike and rider with a total mass of 60 kg are traveling along a road at 10 km.h-1.

Which system has more inertia? Why?

Pitanje 5
5.

What is the net external force on an object in free-fall on Earth if you were to ignore the effect of air?

Pitanje 6
6.

One object exerts a force of magnitude F1 on another object and experiences a force of magnitude F2 in return. What is true for F1 and F2?

Pitanje 7
7.

Two objects rest on a uniform surface. A person pushes both with equal force. If the first object starts to move faster than the second, what can be said about their masses?

Pitanje 8
8.

A 55 kg woman stands on a bathroom scale inside an elevator. The scale reads 600 N. What do you know about the motion of the elevator?

Pitanje 9
9.

If a lift is moving upwards but experiences a downwards acceleration we can say that it is

Pitanje 10
10.

When an object rests on an inclined plane that makes an angle θ with the horizontal, what is the expression for the component of the object's weight force that is parallel to the incline?

Pitanje 11
11.

If an object moves with a constant velocity, we can conclude that

Pitanje 12
12.

A block rests on an inclined rough surface that makes an angle θ with the horizontal. The block remains at rest at θ is slowly increased. Which is the best description of how the magnitudes of the normal force and static frictional force of the rough surface on the block change as θ is slowly increased?

  • increases

  • decreases

  • remains the same

  • Normal force

  • Static frictional force

Pitanje 13
13.

When a force of F acts on an object of mass m, it experiences an acceleration a. If the force is doubled and the mass of the object is halved, what is the new a?