Physics of Motion

Play an AI-generated podcast conversation about this lesson

What is a common characteristic of all objects in the universe, including those that appear to be stationary?

They have a constant velocity

They are at rest with respect to the Earth

They are stationary with respect to the Milky Way

They are moving with the Earth's rotation (correct)

What is the term used to describe the classification and comparison of motions?

Dynamics

Kinematics (correct)

Mechanics

Statics

What is the meaning of the terms 'moment' and 'instant' in the context of motion?

A rate of change

A particular point of time (correct)

A length of time

A type of force

What can be said about the motion of two passengers sitting in a moving car?

They are at rest with respect to each other Signup and view all the answers

What is the condition required for an object to be considered moving?

The object must be changing its position with respect to time Signup and view all the answers

What is the implication of the fact that motion is relative?

An object can be at rest with respect to one reference but moving with respect to another Signup and view all the answers

What is the characteristic of a freely falling body's motion?

Non-uniform motion Signup and view all the answers

What is the SI unit of speed?

Meter per second Signup and view all the answers

What is the formula to calculate the speed of an object?

v = s/t Signup and view all the answers

What is the nature of speed?

Scalar quantity Signup and view all the answers

Why is it difficult to maintain constant speed in a car?

Due to traffic and red lights Signup and view all the answers

What is the average speed of an object equal to?

Total distance traveled divided by total time Signup and view all the answers

What is the definition of velocity?

Rate of change of displacement Signup and view all the answers

What is the SI unit of velocity?

Metre per second Signup and view all the answers

What is the characteristic of a body with uniform velocity?

It travels in a straight line with equal distances in equal intervals of time Signup and view all the answers

What is the effect on the velocity of a car moving on a circular road with constant speed?

The velocity changes direction but not speed Signup and view all the answers

What are the three ways to change the velocity of a body?

Changing the speed, changing the direction, and changing the speed and direction Signup and view all the answers

What is the formula to find the average velocity of a body?

(v1t1 + v2t2) / (t1 + t2) Signup and view all the answers

What can be said about an object that has varying velocity?

It may have varying speed. Signup and view all the answers

What is the acceleration of the car in the first case?

0.2 m/s^2 Signup and view all the answers

Is it possible for an object to have non-zero velocity for a time interval while having zero acceleration at any instant within that interval?

Yes, it is possible. Signup and view all the answers

What is the acceleration of the car in the second case?

-0.4 m/s^2 Signup and view all the answers

Under what condition can an object have non-zero acceleration without having varying velocity?

When the object is changing direction. Signup and view all the answers

Which of the following statements is true about an object's velocity and acceleration?

An object's velocity and acceleration can be in the same or opposite directions. Signup and view all the answers

What is the displacement of the minute hand of a clock in one hour?

Zero Signup and view all the answers

What is the average velocity of an object moving with a uniform velocity v1 for a distance x and then with a uniform velocity v2 for the same distance?

(v1 + v2) / 2 Signup and view all the answers

When is the magnitude of the average velocity of an object equal to its average speed?

When the object is moving in a straight line Signup and view all the answers

What is the rate of change of velocity with respect to time called?

Acceleration Signup and view all the answers

What type of motion is characterized by a decreasing or increasing speed, or a changing direction of motion?