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Newton's Laws of Motion

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Questions and Answers

What is the direction of the force that block A exerts on block B?

Upward

Toward the right (correct)

Downward

Toward the left

What is the net force acting on a 5kg object suspended from a string when it is pulled up with a velocity of 2ms–1?

9.8 N

0 N (correct)

49 N

4.9 N

What is the acceleration of the 5kg object when it is pulled up with a force of 49 N?

4.9ms–2

10ms–2

9.8ms–2

2ms–2 (correct)

What is the type of force that arises when an object is in motion?

Frictional force Signup and view all the answers

What is the effect of a force on an object's motion?

It changes the object's velocity Signup and view all the answers

What is the relationship between the net force and acceleration of an object?

The net force is proportional to the acceleration Signup and view all the answers

What is the term for the set of reference lines used to specify the position of a point in space?

Frame of reference Signup and view all the answers

What is the description of the motion of a box by a person in a train having acceleration?

The box is moving with an acceleration opposite to the train's acceleration Signup and view all the answers

What is the condition for the law of inertia to hold good?

The frame of reference is stationary or moving with a constant velocity Signup and view all the answers

What is the term for the force that opposes motion between two surfaces in contact?