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Syllabus

DIFFERENTIATE BETWEEN SCALAR AND VECTOR QUANTITIES .

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

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

list 10 scalar and 10 vector quantities related to 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 zeroWhat is the full form of CGS and SI?

give 5 examples of uniform circular motion ?

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

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

derive the third equation of motion : v

^{2}- u^{2}=2aswhat is the formula for retardationA 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 5 examples of uniform acceleration.

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...

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

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.

differentiate between distance and displacement

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

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?

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

A) 200 m/s

B)160 m/s

C) 150 m/s

D) 140 m/s

Difference between uniform and non - uniform motion.

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?

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 ?

explain different types of motion with dailylife examples.

What is To and Fro Motion? Explain with examples.A 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

example for acceleration against the direction of motion

activity 8.3 and 8.4 of motion chapter 8

S=ut+1/2at

^{2 }prove by graphical method.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...

3 difference between fundamental and derived physical quantities

(a) Uniform motion

(b) Uniformly accelerated motion

(c) Uniformly retarded motion

give some examples of accelerated motion in everyday life

A truck travelling due north at 20 m/s turns left and travels at the same speed.Then the change in velocity is................

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

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?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.

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.

A girl of mass 40 kg jumps with a horizontal velocity of 5 m/s on to a stationary cart with frictionless wheels. The mass of cart is 3 kg, what is her velocity as the cart start moving?

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

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 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.

Difference between mass and weight

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

A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. What will be the force exerted by the ground on the boy?

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

(1) 2 s

(2) 3 s

(3) 1.5 s

(4) $\sqrt{2}s$

two bodies of different masses Ma and Mb are dropped from two different heights a and b.The ratio of the time taken by two bodies to drop through these distances is

(a) root a : root b (b) a square : b square (c) a:b (d) Ma/Mb*b/a

what are the similarities between distance and displacement ?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.

Give two examples of bodies having non-uniform motion

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 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

While playing football match, Kris collided and got entangled with Tom who was playing for opposite team and running from opposite side. The mass of Kris was 40 kg and the mass of Tom was 60 kg. If Tom was running with a velocity of 3m/s and Kris was running with a velocity of 4 m/s, find the velocity and direction of both of the players after collision assuming other forces were negligible.

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