If the velocity of the body decreases with time

Academic Physics NCERT Class 9

Given statement: "If the velocity of the body decreases with time, the acceleration is negative $(retardation)$, and the motion is called decelerated motion."

The statement is true.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

98 Views

A body starts to slide over a horizontal surface with an initial velocity of $0.5\ m/s$. Due to friction, its velocity decreases at the rate of $0.05\ m/s^2$. How much time will it takes for the body to stop?
A body with an initial velocity x moves with a uniform acceleration y. Plot its velocity-time graph.
What is the acceleration of a body moving with uniform velocity ?
The area of the velocity time graph gives displacement of the body." State whether it is true or false."
State the term used to denote the change of velocity with time.
Fill in the following blanks with suitable words :(a) If a body moves with uniform velocity, its acceleration is…………………………..(b) The slope of a distance-time graph indicates………………….. of a moving body.(c) The slope of a speed-time graph of a moving body gives its………………………..(d) In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the…………….. by the body.(e) It is possible for something to accelerate but not change its speed if it moves in a………………………..
Does work done depend upon the velocity of the body?
What will happen to the kinetic energy of a body if its velocity is halved ?
Velocity-time graph for the motion of an object in a straight path is a straight line parallel to the time axis. Find the acceleration of the body.
Rate of change in velocity with respect to the time is known as ________
What can you say about the motion of a body if:$(a)$. its displacement-time graph is a straight line?$(b)$. its velocity-time graph is a straight line?
The temperature of troposphere gradually decreases with altitude. Explain.
Question 36:(a) Define momentum of a body. On what factors does the momentum of a body depend ?(b) Calculate the change in momentum of a body weighing 5 kg when its velocity decreases from 20 m/s to 0.20 m/s.
A body of mass 25 kg has a momentum of 125 kg.m/s. Calculate the velocity of the body.

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements