﻿ Conceptual Questions and answers on Motion for Class 9 physics # Conceptual Motion Problems and Solution

Question 1.
A object goes from point X to Y and then come back from Y to X. What is the displacement and average velocity?

Question 2.
Write down the difference between Scalars and Vectors?

Question 3.
Four Cyclist A,B,C ,D starts at the same point and at the same time and move in a straight line to reach destination .They all move with uniform velocities. They reach the destination in the following order
$C \to A \to B \to D$
a. If the displacement-time graph is plotted for each cyclist, which will be having highest slope
b. Arrange the cyclist in decreasing order of velocity

Question 4.
What do you infer if ?
 Distance –time graph is straight line 2 Velocity –time graph is curved 3 Displacement –time is zig zag

Question 5.
What is the difference between Uniform Accelerated and Non Uniform accelerated motion?

Question 6.
What happens to speed, velocity acceleration when an object moves in a circle with uniform speed?

Question 7.
When an object is thrown upwards, what is true of velocity and acceleration at the highest point of motion of the object?

Question 8.
True and False Statements
A. Displacement can be zero but distance never
B. Displacement magnitude can be greater than distance travelled by the object
C. Time is a vector quantity
D. If the velocity of the body decreases with time, the acceleration is negative (retardation), and the motion is called decelerated motion
E. The area of the velocity time graph gives displacement of the body
F. Acceleration is a scalar quantity
G. Motion and rest are relative terms
I. an object can be moving with Uniform speed but variable acceleration

Question 9.
Gave the formula for each
 1 Relation between Initial, final velocity ,acceleration and displacement in a uniformly accelerated straight line motion 2 Average velocity 3 Relation between Initial, final velocity ,acceleration and time in a uniformly accelerated straight line motion 4 Relation between Initial velocity ,acceleration ,displacement and time in a uniformly accelerated straight line motion 5 Average acceleration 6 Average speed

Question 10.
Difference between Speed and Velocity?