Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.

In this lesson, we will learn how to apply Newton’s second law when the forces acting on a body and the motion caused by them are represented in the vector notation.

Q1:

A body of mass 250 g moves under the action of a force, newtons. Given that the body starts from rest at the origin, and , where and are perpendicular unit vectors, find the displacement in terms of .

Q2:

A body of mass 7 kg moves under the action of three forces, , , and . Given that the displacement of the particle at time seconds is , determine the values of and .

Q3:

A body of mass 1 kg was moving in a straight line with a velocity , where and are two perpendicular unit vectors. The force acted on the body for 8 seconds. Find the body’s speed after the action of this force.

Don’t have an account? Sign Up