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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.

(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

What is the full form of CGS and SI?

give 5 examples of uniform circular motion ?

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

What is To and Fro Motion? Explain with examples.derive the third equation of motion : v

^{2}- u^{2}=2asif momentum of a body increases by 20 percent, then percentage increase in its kinetic energy is...

what is the formula for retardationCalculate the angular speed of fly-wheel making 120 revolutions /min ?

give 5 examples of uniform acceleration.

a) H/2

b) H

c) 2H

d) infinity

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

Please answer by 7:30 pm today(1) 2 m/s (2) 4 m/s (3) 6 m/s (4) 8 m/s

Derive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

^{2}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

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

derivation - equation of motion by graphical method

Can u give me 9th cbse fa1 sample paper

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?

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

A body moving with uniform acceleration describes 20 m in 2nd second and 30 m in 4th second of its motion. Calculate the distance moved by it in 6th second.

What is the basic difference between Motion and Rest ?

activity 8.3 and 8.4 of motion chapter 8

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?

_{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 zeroABDUL 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?

THE LINEAR SPEED OF THE SECONDS HAND OF A WALL CLOCK IS 1.05 cm/s . WHAT WILL BE THE LENGTH OF THE SECONDS HAND ????state four differences between distance and displacement

(a) 44% (b) 55% (c) 66% (d) 88%

Difference between uniform and non - uniform motion.

give an example to show that displacement can be negative?

explain different types of motion with dailylife examples.

S=ut+1/2at

^{2 }prove by graphical method.3 difference between fundamental and derived physical quantities

example for acceleration against the direction of motion

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) Uniform motion

(b) Uniformly accelerated motion

(c) Uniformly retarded motion

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 train starting froma railway station and moving with uniform acceleration attains a speed 40 km / h in 10 minutes . find its acceleration

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 ?

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

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.

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.

Q.26. Which of the following can not be speed — time graph of a body in motion.

(a)

(b)

(c)

(d)

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

Difference between mass and weight

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.

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.

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.

- 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

what are the similarities between distance and displacement ?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

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

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

A) 200 m/s

B)160 m/s

C) 150 m/s

D) 140 m/s

ppt on motion of class9

A dancer demonstrating dance steps along a straight line. The position time graph is given below.

find the avg. velocity of the dancer.