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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

1. positive , positive 2. positive , negative 3. negative , negative 4. negative , positive

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

1. less than one 2. greater than one 3. equal to one 4. greater than or equal to one

list 10 scalar and 10 vector quantities related to motion.

her right and covers a distance of 3 km to reach her school. Meanwhile her brother Bujo

takes a short and direct route to reach the school.

What is the difference between the displacements of Paheli and Bujo?

(a)0 km

(b)0.5 km

(c)1 km

(d)1.5 Km

What is the full form of CGS and SI?

give 5 examples of uniform circular motion ?

a) Uniform acceleration

b) Non Uniform acceleration

c) Retardation

d) Constant speed

No link please.

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

when a graph of one quantity versus another results in a straight line the quantities are:

a.] both constant

b.] equal

c.] directly proportional

d.]inversely proportional

derive the third equation of motion : v

^{2}- u^{2}=2aswhat are the full forms of v, u, at, s, in chapter 8 motionwhat is the formula for retardationgive 5 examples of uniform acceleration.

A force of 15N acts for 5s on a body of mass 5kg which is initially at rest.Calculate:-

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

1Kgmoving horizontally dueNORTH8m/sstrikes a vertical wall and is reflected back with a speed of6m/s.what is the change in its??momentumDerive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

^{2}What is the momentum of a body of mass 200g moving with a velocity of 15m/s?

derivation - equation of motion by graphical method

Can u give me 9th cbse fa1 sample paper

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

Why is d motion of an athlete moving along with circular path an accelerated motion?

differentiate between distance and displacement

(a) How long does it take to reach the ground?

(b) What is the velocity with which it will strike the ground?

Uniform circular motion is an accelerated motion . JUSTIFY THIS STATEMENT

PASSAGE -IV

A thief is running on a motorcycle at a constant speed of 25 ms–1. A police jeep starts chasing from a point 1.25 km behind him a uniform acceleration of 2 ms

^{–2}.Q12. What should be the minimum acceleration of the thief to escape from police.

(A) 1 ms

^{–2}(b) 1.25 ms^{–2}(C) 1.5 ms

^{–2}(d) 1.75 ms^{–2}What is the basic difference between Motion and Rest ?

a pin

an ink pot

your body

textbook

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?

Please answer this question.

state four differences between distance and displacement

If the initial velocity is zero then the force acting is:-

Difference between uniform and non - uniform motion.

and t is in seconds. Its average acceleration over the interval from t = 0 to t = 2 s is:

A. −4m/s2

B. 4m/s2

C. −10m/s2

D. 10m/s2

E. −13m/s2

ans: C

What kind of motion of a body represent by the graph given below-

give an example to show that displacement can be negative?

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

S=ut+1/2at

^{2 }prove by graphical method.what are the similarities between distance and displacement ?explain different types of motion with dailylife examples.

example for acceleration against the direction of motion

3 difference between fundamental and derived physical quantities

- Calculate the magnitude of displacement of the truck in 15 seconds.
- During which part of the journey was the truck decelerating?
- Calculate the magnitude of average velocity of the truck

rest and motion are relative terms. 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...

Dispersion

Tyndall effect

Brownian movement

Oscillation

give some examples of accelerated motion in everyday life

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

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 ?

Derive the equation :

^{2}EXPLAIN WHETHER THE WALLS OF A CLASSROOM ARE AT REST OR IN MOTION?

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.

V2-u2=2aS

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.

What is To and Fro Motion? Explain with examples.Difference between mass and weight

A force of 25N acts on a mass of 500g resting on a frictionless surface.What is the acceleration produced?

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

window on the 4th floor, then down to the 3rd floor, then up to the 6th floor, then

down to the 5th floor, then down to the 2nd floor, and finally he washes the 1st

floor window. What is his total distance? (9 Floors)

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?A particle is projected with a velocity "v" note at an angle of 30 degree with the vertical.Find the average velocity for its time of flight.

IF POSSIBLE PLZ EXPLAIN WITH A FIGURE

An electric train is moving with a velocity of 120 km/ hr. How much distance will it move in 30 seconds.

Give one example of the following :

a)positive acceleration

b)negative acceleration

c)uniform acceleration

Give two examples of bodies having non-uniform motion

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?

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.

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

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

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