Motion in Physics: Understanding Kinematics and Mechanics

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What is the total length of the path covered by the person moving from A to B?

40 km

16 km or 24 km (correct)

20 km

6 km

What is the net displacement of the person when they move back from B to A?

6 km

0 km (correct)

24 km

16 km

What is the difference between distance and displacement?

Distance is a scalar quantity, displacement is a vector quantity (correct)

Distance is a vector quantity, displacement is a scalar quantity

Distance is measured in a straight line, displacement is measured in a curve

Distance is measured in a curve, displacement is measured in a straight line

What is the displacement of the person from A to B?

6 km Signup and view all the answers

What is the S.I unit of distance and displacement?

metre Signup and view all the answers

What is the primary focus of the branch of Mechanics known as Kinematics?

The study of motion without reference to force Signup and view all the answers

What is the state of an object that does not change its position with respect to its surroundings?

Rest Signup and view all the answers

What is the term used to describe the branch of physics that deals with the study of motion of objects?

Mechanics Signup and view all the answers

What happens to the position of an object in motion with respect to its surroundings?

It changes continuously Signup and view all the answers

What is the Greek word that means 'motion' and is the origin of the word 'kinematics'?

Kinema Signup and view all the answers

What is the state of a car that is not moving with respect to the trees and bushes around it?

Rest Signup and view all the answers

What is the primary characteristic of scalar quantities?

Magnitude and a suitable unit Signup and view all the answers

What is the definition of vector quantities?

Quantities with magnitude, a suitable unit, and a particular direction Signup and view all the answers

Which of the following is an example of a scalar quantity?

Speed Signup and view all the answers

What is the difference between scalar and vector quantities?

Scalar has magnitude and unit, vector has magnitude, unit, and direction Signup and view all the answers

Which of the following is an example of a vector quantity?

Force Signup and view all the answers

What is the purpose of a unit in scalar quantities?

To provide a standard for measurement Signup and view all the answers

What is the acceleration of the bus in the given scenario?

3m/s² Signup and view all the answers

What is the deceleration of the motorcycle in the worked example?

1.4m/s² Signup and view all the answers

What is the change in velocity of the motorcycle in the worked example?

10m/s Signup and view all the answers

What is the time taken by the motorcycle to slow down in the worked example?

3 seconds Signup and view all the answers

What is the significance of the negative sign in the deceleration of the motorcycle?

It indicates retardation in the opposite direction of velocity Signup and view all the answers

What is the condition for a body to be considered in motion?

If it changes its position with respect to its surroundings Signup and view all the answers

What is the relationship between rest and motion?

Rest and motion are relative states Signup and view all the answers

What is the example of a body being at rest and in motion at the same time?

A passenger sitting in a moving bus Signup and view all the answers

What is the nature of motion of all objects in the universe?

All objects are in motion, but the nature of their motion is different Signup and view all the answers

What is the reference point for an observer to determine if a body is in motion or at rest?

The surroundings of the body Signup and view all the answers

What is the significance of the example of a passenger flying on an aeroplane?

It shows that motion is always relative Signup and view all the answers