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Class 10 Class 12
A projectile is projected with velocity u at an angle θ with the vertical. At what point velocity and acceleration will be perpendicular to each other?

At the highest point the velocity is in horizontal direction and acceleration is in vertically downward direction. Hence, velocity and acceleration of projectile are perpendicular to each other at the highest point.
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What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors.

814 Views

Give three examples of scalar quantities.

Mass, temperature and energy
769 Views