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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

what is the formula for retardation5 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.

What is the full form of CGS and SI?

give 5 examples of uniform circular motion ?

Q1. The following graph describes the motion of a girl going to meet her friend who stays 50 m from her house.

(a) How much time she takes to reach her friend's house ?

(b) What is the distance travelled by the girl during the time interval 0 to 12 min?

(c) During which time interval she is moving towards her house?

(d) For how many minutes she was at rest, during the entire journey?

(e) Calculate the speed by which she returned house.

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

a) Define uniform acceleration. What is the acceleration of the body movingwith uniform velocity?b) A particle moves over three quarters of a circle of radius r. What is themagnitude of its displacement?

derive the third equation of motion : v

^{2}- u^{2}=2asA 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

give 5 examples of uniform acceleration.

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

Please answer by 7:30 pm today(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

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

What is To and Fro Motion? Explain with examples.how to draw the distance - time graph for activity 8.9 and activity 8.10 in page number 106 and 107

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

Derive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

^{2}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

derivation - equation of motion by graphical method

Can u give me 9th cbse fa1 sample paper

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

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

what should we know to find the exact position of a moving body

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?

a) Uniform acceleration

b) Non Uniform acceleration

c) Retardation

d) Constant speed

No link please.

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?

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

state four differences between distance and displacement

Dispersion

Tyndall effect

Brownian movement

Oscillation

Difference between uniform and non - uniform motion.

give an example to show that displacement can be negative?

(a) speedometer (b) odometer

S=ut+1/2at

^{2 }prove by graphical method.Can the displacement be greater than the distance travelled by an object ?

explain different types of motion with dailylife examples.

example for acceleration against the direction of 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 zero3 difference between fundamental and derived physical quantities

1) A scooter moving with a speed of 300m per 1 minute

2) A car moving with a speed of 36 km per hour

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...

a boy of mass 60 kg running at 3m/s jumps on to a trolley of mass 140 kg moving with a velocity of 1.5m/s in the same direction. what is their common velocity. please answer this question.

give some examples of accelerated motion in everyday life

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

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

A TRUCK IS MOVING WITH A VELOCITY OF 72 km/h AND IT TAKES 3s TO STOP AFTER THE BRAKES ARE APPLIED . CALCULATE THE FORCE EXERTED BY BRAKES . MASS OF TRUCK IS 1200 kg.

PLS ANSWER FAST. URGENT

under what circumstances is the velocity of a body negative?

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 ?

An object is moving along x-axis in such a way that its displacement is given by x=30 + 20t^2 where, x is in metres and t is in seconds.

(a) Find the velocity and acceleration.

(b) What is the initial position and the velocity of the object?

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.

a train is travelling at a speed of 90km/h. brakes are applied so as to produce a uniform acceleration of -0.5ms sq. fine how far the train will go before it is brought to rest?

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 pin

an ink pot

your body

textbook

Difference between mass and weight

A body travels 2m in the 2nd seconds and 6m in the next four seconds . what will be the distance travelled in the 9th second.

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

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 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.

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

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

what are the similarities between distance and displacement ?Give two examples of bodies having non-uniform motion

Pls explain this question:

Two cars leave with a time gap of 1 minute from the same point. They move with an acceleration of 0.2 m/s2. How long after the departure of the second car, does the distance between them become equal to 3 times its value, when the second car just starts?

a spaceship travelling in space at 300km/sec fires its engine for 15 sec such that its final velocity is 600 km/sec calculate total distance travelled by the ship in 1 min starting from the time of firing

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

A simple pendulum hangs from the roof of a train .The string is inclined towards the rear of the train.What is the nature of motion of train ?

a) Uniform b) Accelerated c) Retarded d) At rest

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