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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

1. What is the distance covered during its deceleration..??

2. What is the average speed during the entire journey..??

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

list 10 scalar and 10 vector quantities related to motion.

A train starting from railway station and moving wth uniform acceleration attains a speed 40km/hr in 10 mins. find its acceleration?

What is the full form of CGS and SI?

what is the formula for retardationgive 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}=2asA train is moving towards east and a car is along north,both with same speed.The observed direction of the car to the passenger in the train

a) South-East direction b) North-East direction c) North-West direction d) None of these

give 5 examples of uniform acceleration.

It takes 6 minutes for the signal sent by an artificial satellite orbiting around the earth to reach the ground station . Calculate the distance of the artificial satellite from the ground station . The signal travels at a speed of the light that is 3×10 raised to 8 m/s

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

Please answer by 7:30 pm todaya ball thrown upwards reaches point P of its path at the end of 4 seconds and the highest point Q at the end of 12 seconds. After how many seconds from the start will it reach point P again

if 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

Derive the following equations of motion graphically-

1) v = u + at

2) s = ut + 1/2at

^{2}(a) 12 m/s

(b) 6 m/s

(c) 2 m/s

(d) 0 m/s

derivation - equation of motion by graphical method

a)O to P

b)From O to P and back to Q

Can u give me 9th cbse fa1 sample paper

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

You are driving a car with a speed of 3 m/s. By applying brakes, you have stopped your car in 6 s. Calculate the acceleration and the distance travelled before stopping the car.plss answer with steps....

differentiate between distance and displacement

Uniform circular motion is an accelerated motion . JUSTIFY THIS STATEMENT

^{-1}, 20 m s^{-1 }and 10 m s^{-1 }, respectively. What is the average speed of the person while journey?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) H/2

b) H

c) 2H

d) infinity

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

Solve this

4)A frog hops along a straight line path from point 'A' to point 'B' in 10 sec and then turns and hops to point 'C' in another 5 sec. Calculate the average velocity of the frog for the motion between (i) (A) to (B) (ii) (A) to (C) through (B)Difference between uniform and non - uniform motion.

Can the displacement be greater than the distance travelled by an object ?

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

give an example to show that displacement can be negative?

S=ut+1/2at

^{2 }prove by graphical method.(a) V= u+ at

(b) 2as= v2? u2

(c) Vav=(u + v)/2

(d) S= ut + ? a t2

explain different types of motion with dailylife examples.

NAME THE 2 PHYSICAL QUANTITIES WHICH CAN BE OBTAINED FROM VELOCITY-TIME GRAPH?

example for acceleration against the direction of motion

^{2}. Solve the following :-Please solve in a detailed manner.

3 difference between fundamental and derived physical quantities

what is the difference between distance travelled by a body and its displacement, explain with the help of a diagram

rest and motion are relative terms. Explain.

under what condition is the displacement of a body equal to the distance travelled by it?

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 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 secgive 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?

what type of motion is represented by the tip of second hand of a watch ? is it uniform accelerated ? explain

Q18A body starts from rest and moves with a uniform acceleration of 5m/s^{2}for 5s and then it moves with a constant velocity for 4s. Later it slows down and comes to rest in 5s. Draw the velocity graph for the motion of the body and answer the following questions:a. What is the maximum velocity attended by the body?

b. What is the distance travelled during this period of acceleration?

c. What is distance travelled when the body was moving with constant velocity?

d. What is the retardation of the body while slowing down?

e. What is the distance travelled by retarding?

f. What is the total distance travelled?

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 ?

the initial velocity of a body is u. It is under uniform acceleration. Its velocity v at any time given by a -

(a)v=u+at

^{2}(b)v=u+1/2at

^{2}(c)v=u+at

(d)v=u

Derive the equation :

^{2}

- 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

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

a body is dropped freely under gravity from the top of a tower of height 78.4m calculate time to reach the ground velocity with which it will strike the ground ( acceleration = 10m/s^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.

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 is To and Fro Motion? Explain with examples.can a particle be acclerated:-

a) if its speed is constant.

b) if its velocity is constant.

Give Reason.

Difference between mass and weight

how do we measure magnitude of displacement from a v-t curve?

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.

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?what are the similarities between distance and displacement ?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.

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

Time (h)

11.00 11.30 12.00 12.30 1.00Distance (km)

0 30 30 65 100Plot the graph:

(i) Find the speed of the car between 12.00 hours and 12.30 hours

(ii) What is the average speed of the car?

(iii) Is the car's motion an example of uniform motion? Justify.

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

ppt on motion of class9

at a time when it is cloudy .there may be frequent thunder and lighting .the sound of thunder take some time to reach you after you see the lighiting.

can you answer why this happen.measure this time interval using the digital wrist watch and stop watch.calucalate the distance of lighting nearing point, speed of sound in air is 346m/sec