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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

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

list 10 scalar and 10 vector quantities related to motion.

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

What is the full form of CGS and SI?

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

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 To and Fro Motion? Explain with examples.what is the formula for retardationgive 5 examples of uniform acceleration.

3 difference between fundamental and derived physical quantities

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

Please answer by 7:30 pm todayQ. Little Joey plays with his remote control car, and generates the motion graph below. The car starts by moving eastwards.

(a) Identify section (s) where the car moves with constant velocity.

(b) Identify section (s) where the car moves west.

(c) Identify section (s) where the car speeds up.

(d) When is the car at rest?

(e) What is the total displacement of the car from 0 to 22 seconds?

Calculate the angular speed of fly-wheel making 120 revolutions /min ?

Derive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

^{2}how to draw the distance - time graph for activity 8.9 and activity 8.10 in page number 106 and 107

_{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 zeroderivation - equation of motion by graphical method

why do the passengerstend to fall sideways when a speeding bus takes a sharp turn?

Can u give me 9th cbse fa1 sample paper

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

activity 8.3 and 8.4 of motion chapter 8

differentiate between distance and displacement

what are the similarities between distance and displacement ?Uniform circular motion is an accelerated motion . JUSTIFY THIS STATEMENT

the weight of the body on the surface of the earth is 392N. what will be the weight of this body on a planet whose mass is double than that of earth and radius is four times the radius of the earth.

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?

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

When the traffic light turns green, a car moves with a constant acceleration 2 m/s2. At the same time a truck moving with a constant speed of 10 m/s, overtakes and passes the car.

(i) How far beyond the starting point will the car overtake the truck?

(ii) How fast will the car be travelling at that instant?

(iii) Draw position time curve for each vehicle

Please answer and explain briefly. I couldn't understnad this question so please explain and the graph also and the speed is not given

Difference between uniform and non - uniform motion.

A ball is dropped from the top of building .The ball takes 0.5 sec to fall past the 3 m length of a window some distance from the top of building ,How fast was the ball going as it passes the top of the window ? How far is top of the window from the point at which ball was dropped ? ( take g = 9.8 m/s

^{2})give an example to show that displacement can be negative?

explain different types of motion with dailylife examples.

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 ?

example for acceleration against the direction of motion

S=ut+1/2at

^{2 }prove by graphical method.

- 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.

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.

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 body starts from rest and travels a distance x with uniform acceleration then it travels a distance 2x with uniform speed, finally it travels a distance 3x with uniform retardation and comes to rest.If the complete motion of particle is along a straight line,then the ratio of its average velocity to maximum velocity during its motion is -

a )( 2 / 5 ) b )( 3 / 5 ) c )( 4 / 5 ) d ) (6 / 7 )

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 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 cheetah is the fastest land animal and it can achieve a peak velocity of 100 km per hour upto distances less than 500 metres.If the cheetah spots his prey at a distance of 100 metres what is the minimum time it will take to get its prey ?

Derive the equation :

^{2}A car is moving on a straight road with a speed of 20 m/s .At t = 0 ,the driver of car applies the brakes after watching and obstacle 150 m ahead .After application of brakes ,the car retards with 2m/s

^{2}.Find the position of car from the obstacle at t = 15 secA 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.

An object is moving along a straight line with uniform acceleration. The following table gives the velocity of the object at various instants of time.

Time (in seconds )

0

1

2

3

4

5

6

Velocity

(In m/s )

2

4

6

8

10

12

14

(i) Find the velocity of the object at the of 2.5 sec.

(ii) Calculate the acceleration

(iii) Calculate the distance covered in the last 4 sec.

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.

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

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

Difference between mass and weight

Explain whether force is balanced or unbalanced force

1) a suitcase is dropped from certain height.

2) Biscle is moving in straight line with constant velocity.

3) In game of tug of war , the two teams apply force but the rope does not move

4) a ball rolling on ground stops after sometime.

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

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

why does stone tied to a strong string and roated, fly off tangentially when released

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

Find the ratio of the distances travelled by a freely falling body in first,second and third second of its fall.

1) Two bodies each of mass 0.5 kg are moving in a straight line but opposite in direction with the same velocity of 2m/s. They collide with each other and stick to each other after collision. What is the common velocity of these bodies after collision ?

2) An object of mass 1.5 kg travelling in a straight line with a velocity of 5 m/s collides with a wooden block of mass 5kg resting on the floor. This object sticks with the wooden block after collision and both move together in a straight line. Calculate a) the total momentum before collision b) the total momentum after collision and c) the velocity of th e combination of these objects after collision.

Please answer fast and explain me.

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

^{-1}.Its brakes can produce a maximum retardation of 6ms^{-2}.The minimum time which it can cover a distance of 3 km willbe ?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

A train starting from a railway station and moving with uniform acceleration attains a speed 40 km h

^{−1}in 10 minutes. Find its acceleration.