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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

5 examples of uniform and Non-uniform motion.??

EXPLAIN WHETHER THE WALLS OF A CLASSROOM ARE AT REST OR IN MOTION?

list 10 scalar and 10 vector quantities related to motion.

What is the full form of CGS and SI?

give 5 examples of uniform circular motion ?

(in seconds) are given by

particle 1: x(t) = 3.5 − 2.7t3

particle 2: x(t) = 3.5 +2.7t3

particle 3: x(t) = 3.5 +2.7t2

particle 4: x(t) = 3.5 − 3.4t − 2.7t2

Which of these particles is speeding up for t > 0?

A. All four

B. Only 1

C. Only 2 and 3

D. Only 2, 3, and 4

E. None of them

ans: A

Please explain the derivation of the equations of motion by graphical method.

activity 8.3 and 8.4 of motion chapter 8

derive the third equation of motion : v

^{2}- u^{2}=2aswhat is the formula for retardationgive 5 examples of uniform acceleration.

Can a body have zero velocity and still acceleration? give examples,

Please answer by 7:30 pm todayif momentum of a body increases by 20 percent, then percentage increase in its kinetic energy is...

how to draw the distance - time graph for activity 8.9 and activity 8.10 in page number 106 and 107

(a) Displacement

(b) Speed

(c) velocity

(d) acceleration

Derive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

^{2}derivation - equation of motion by graphical method

Can u give me 9th cbse fa1 sample paper

Q 49 A man travels a distance of 1.5m towards East, then 2.0m towards South and finally 4.5m towards East.

i) What is the total distance traveled?ii) What is his total displacement?what are the difference between uniform linear and uniform circular motion? explain with example.

what is retardation? and how doesit affect the speed?

differentiate between distance and displacement

A man walked from point A to F following the route in the grid below in 3250 seconds. Determine a) the average speed in m/s for the whole journey? b) the magnitude of the displacement? c) the magnitude of the average velocity in m/s for the whole journey?

Uniform circular motion is an accelerated motion . JUSTIFY THIS STATEMENT

What is the basic difference between Motion and Rest ?

A train goes from station A to station B as shown in figure. Calculate

(i) The distance traveled by the train

(ii) The magnitude of the displacement of the train on reaching station B.

A body is moving along a circular path of radius(R). What will be the distance and displacement of the body when it completes half revolution?

ABDUL WHILE DRIVING TO SCHOOL COMPUTES THE AVERAGE SPEED FOR HIS TRIP TO BE 20 KM/HOUR. ON HIS RETURN TRIP ALONG THE SAME ROUTE , THERE IS LESS TRAFFIC AND THE AVERAGE SPEED IS 30 KM/HOUR. WHAT IS THE AVERAGE SPEED FOR ABDUL'S TRIP?

state four differences between distance and displacement

Difference between uniform and non - uniform motion.

give an example to show that displacement can be negative?

A car is starting from rest and moving with uniform acceleration on a straight road travels for some time such that the paths described by it in the last second and in the penultimate second of its motion are in the ratio 4 : 3 respectively. Calculate the total time travelled by the body.S=ut+1/2at

^{2 }prove by graphical method.A body travels 200cm in the 1st 2 s and 220cm in the next 5 s.Calculate the velocity at the end of 7th second from start ? It's answer is 2.22 m/s

explain different types of motion with dailylife examples.

example for acceleration against the direction of motion

1. Distinguish between distance and displacement for

a) an object moving along a straight line

b)an object moving in a plane

2. Give an example where the speed on object first increases,then remains constant for some time,and then decreases.

3.A girl bends to touch her toes.Is the motion of her head an example of uniform motion or accelerated motion.Explain.

3 difference between fundamental and derived physical quantities

rest and motion are relative terms. Explain.

can a body be at rest and motion at a same time ? explain

1.The numerical ratio of displacement to distance for a moving object is:

a)always less than 1

b)always equal to 1

c)always grater than 1

d)equal to or less than 1

explain too...

give some examples of accelerated motion in everyday life

If a body has a velocity of 50m/s and the uniform accelaration is 5m/s

^{2}, find the time it takes to travel a distance of 240m through an equation of motion.Under what condition is the magnitude of average velocity of an object equal to it's average speed?

Time (h)

11.00 11.30 12.00 12.30 1.00Distance (km)

0 30 30 65 100Plot the graph:

(i) Find the speed of the car between 12.00 hours and 12.30 hours

(ii) What is the average speed of the car?

(iii) Is the car's motion an example of uniform motion? Justify.

reason/reasons.

A ball is dropped on the floor from the height of 10m. It rebounds to a height of 2.5m. If the ball is in contact with the floor for 0.01 seconds, what is the average acceleration during contact ?

Can the displacement be greater than the distance travelled by an object ?

Derive the equation :

^{2}What is To and Fro Motion? Explain with examples.A train starting from rest attains a velocity of 72 km/h in 5 minutes. Assuming that the acceeration is uniform. Find the acceleration and the distance traveed by the train for attaining this velocity.

?

draw a velocity versus time graph of a stone thrown vertically upwards with a velocity v and then coming downwards after attaining the maximum height.

A) 7:5:3 B) 3:5:9

C) 5:3:7 D) 5:7:3

A girl swims in a swimming pool of length 100 m. She swims from one end to another end and reaches the starting point again in 2 minutes. The average velocity of the swimmer is ____.

Difference between mass and weight

a body can have zero average velocity but not zero average speed . justify

(a) 12 m/s

(b) 6 m/s

(c) 2 m/s

(d) 0 m/s

what are the similarities between distance and displacement ?An electric train is moving with a velocity of 120 km/ hr. How much distance will it move in 30 seconds.

A body covers 4m in 3^{rd}second and 12m in 5^{th}second. If the motion is uniformly accelerated, how far will it travel in the next 3 seconds?Q.Give 3 examples where distance is not equal to the magnitude of displacement .Give two examples of bodies having non-uniform motion

^{2}. When the separation between them is 25km, the acceleration of the heavier object isA car starts from rest and accelerates uniformly for 10 s to a velocity of 8 m/s. It then runs at a constant velocity and is finally brought to rest in 64 m with a constant retardation. The total distance covered by the car is 584 m. Find the value of acceleration, retardation and total time taken.

1 displacement and time

2 velocity and time

A car accelerates uniformly from 18 km/h to 36 km/h in 5 seconds.

calculate the -

a)acceleration

b)distance covered by the car

what type of motion uniform or non-uniform is exhibited by a freely falling body? give reasons for your answer

ppt on motion of class9