Question

case study questions based on motion in a straight line​

Answer 1

Motion in a straight line​ is called as linear motion.

Explanation:

Motion and Linear motion:

• In physics, when the position of an object changes over a period of time, it is called motion.

• Mathematically motion is described in terms of displacement, distance, velocity, velocity, acceleration and time.

• Motion in a straight line is nothing but linear motion or rectilinear motion.
• Linear motion is the most straightforward of one-dimensional motion.

Types of Linear Motion:

There are two types of linear motion.

• Uniform linear motion
• Non-uniform linear motion

Uniform linear motion:

• If a body travels in a straight line and covers an equal amount of distance in an equal interval of time, it is said to have uniform motion.

• In simple words, a body is said to have uniform acceleration if the rate of change of its velocity remains constant.

• For example, If a car travels at a speed of  $60\frac{km}{hour}$ it will cover a $1\frac{km}{minute}$ In this sense, the motion of car acceleration is uniform.

Non-uniform linear motion:

• Unlike the uniform acceleration, the body is said to have a non-uniform motion when the velocity of a body changes by unequal amounts in equal intervals of time the rate of change of its velocity changes at different points of time during its movement.
• For example, A boy is kicking a football.
• It might cover $4$ meters in the first attempt, $6$meters in the second change, $9$ meters in the third attempt and so on as per the velocity exerted by the boy.

Motion in a Straight Line Formulas:    

$v=u+at$

$s=ut+\frac{1}{2} at^{2}$

$v^{2}=u^{2} +2as$

This formula is used in motion in a straight line.