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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

a) H/2

b) H

c) 2H

d) infinity

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

list 10 scalar and 10 vector quantities related to motion.

A. v1=v2 B.v1>v2 C. v1<v2 D. cannot be predicted

What is the full form of CGS and SI?

if momentum of a body increases by 20 percent, then percentage increase in its kinetic energy is...

give 5 examples of uniform circular motion ?

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

derive the third equation of motion : v

^{2}- u^{2}=2aswhat is the formula for retardationWhat is To and Fro Motion? Explain with examples.give 5 examples of uniform acceleration.

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

Please answer by 7:30 pm todayCalculate the angular speed of fly-wheel making 120 revolutions /min ?

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

Derive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

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

(1) 2 m/s (2) 4 m/s (3) 6 m/s (4) 8 m/s

Can u give me 9th cbse fa1 sample paper

what are the difference between uniform linear and uniform circular motion? explain with example.

differentiate between distance and displacement

Uniform circular motion is an accelerated motion . JUSTIFY THIS STATEMENT

What is the basic difference between Motion and Rest ?

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?

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

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?

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.state four differences between distance and displacement

Difference between uniform and non - uniform motion.

_{r}and a_{t }represent radial and tangential acceleration, the motion of a particle will be uniform circular motion ifa) a

_{r}=0 and a_{t }=0b) a

_{r}= 0 but a_{t }is not zeroc) a

_{r}not zero , but a_{t }= 0d) a

_{r}and a_{t }are both not zerogive an example to show that displacement can be negative?

activity 8.3 and 8.4 of motion chapter 8

explain different types of motion with dailylife examples.

S=ut+1/2at

^{2 }prove by graphical method.example for acceleration against the direction of motion

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 ?

rest and motion are relative terms. Explain.

3 difference between fundamental and derived physical quantities

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

discuss whether the walls of your classroom are at rest or in motion

Under what condition is the magnitude of average velocity of an object equal to it's average speed?

is still 20 km away from "X", an insect starts at "X" and shuttles between "X" and engine at a uniform

speed of 42 km per hour. The total distance travelled by the insect, by the time engine

reaches "X" is ?

if a coin charged in air is placed in kerosine which of the following quantities will be affected?

i)charge

ii)charge density

iii)electric field

iv)energy density

v)force per unit area

Derive the equation :

^{2}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.

(a) Uniform motion

(b) Uniformly accelerated motion

(c) Uniformly retarded motion

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.

For time t > 0, which of the following statements is true ?

(A) At time ${t}_{B}$ both trains have the same velocity.

(B) Both trains speed up all the time.

(C) Both trains may have the same velocity at some time earlier than ${t}_{B}$.

(D) Graph indicates that both trains have the same acceleration at a given time.

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

Difference between mass and weight

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

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

of 4m/s2. Its average velocity as it goes from x = 2m to x = 8m is:

A. 1m/s

B. 2m/s

C. 3m/s

D. 5m/s

E. 6m/s

ans: E

what are the similarities between distance and displacement ?Differentiate between :-

1-Speed and Velocity

2-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?Give two examples of bodies having non-uniform motion

A 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.

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

The weight of the boat , acting at the centre of mass , is 24 KN. The tensions in the ropes are ${\mathrm{T}}_{1}\mathrm{and}{\mathrm{T}}_{2}.$

Determine

(i) the moment of the weight of the boat about the point P.

(ii) the tension ${\mathrm{T}}_{1}.$

(iii) the tension ${\mathrm{T}}_{2}.$

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

when is a body said to be in motion (or moving)..??