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Lesson: Newton’s First Law of Motion

In this lesson, we will learn how to solve problems on Newton's first law, which states that a body is preserved in its state of rest or of moving uniformly unless acted upon by an unbalanced external force.

Worksheet: Newton’s First Law of Motion • 23 Questions

Q1:

In the given figure, the body is at rest under the action of a system of forces. Given that the forces are measured in newtons, find the magnitudes of and .

Q2:

In the given figure, the body is at rest under the action of a system of forces. Given that the forces are measured in newtons, find the magnitudes of and .

Q3:

In the figure, the body is moving at a constant velocity under the action of a system of forces. Given that the forces are measured in newtons, find the magnitudes of and .

Q4:

In the given figure, the body is subject to the action of a system of forces. Given that it is moving at a constant speed and that the forces are measured in newtons, find and .

Q5:

A car of mass 1.8 tonnes is moving at a constant speed on a horizontal road. If the resistance to the motion is 57.6 kg-wt per tonne of the car’s mass, find the force of its motor.

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