### CBSE IX Physics Motion

## define equations of motion

### CBSE IX ALL Subject

## do we hav to know the derivation of eqn of motions from exam question point of view

**AMOGH**15th March 2008 7:36 PM

### CBSE IX Physics Motion

## another quest. a small steel ball is dropped from a height of 2.5m into glycerin jar. it hits the surface of glycerin with certain velocity and sinks into the bottom by losing its 20% of its velocity at the surface. if the time taken to reach the bottom after it si dropped is 2 sec. and velocity in glycerin is lost at constant rate, then fiind the average velocity of the ball of journey

**vedant sharma**6th October 2014 12:10 PM

### CBSE XI Science Physics Motion in a Straight Line

## A ball thrown vertically upwards with a speed of 9.6m/s from the top of a tower retuns to the earth in 6sec .Find height of the tower.

**JAIBHARGAVA200**14th October 2014 2:19 PM

### CBSE VIII Science Force and Pressure

##
A lift whose cage is 3 m high is moving up with an acceleration of 2m/s^{2}. A piece of stone is dropped from the top of the cage of the lift when its velocity is 8m/s. if g =10m/s^{2} then the stone wil reach the floor of the lift after how much time?

A lift whose cage is 3 m high is moving up with an acceleration of 2m/s^{2}. A piece of stone is dropped from the top of the cage of the lift when its velocity is 8m/s. if g =10m/s^{2} then the stone wil reach the floor of the lift after how much time?

**Saptarshi Sen**19th April 2015 2:01 PM

### CBSE XI Science Physics Gravitation

## A body is thrown vertically upwards with velocity 'u'. The distance travelled by it in the fifth and sixth seconds are equal. what is the value of 'u'? (Take g=9.8m/s^2)

**Isha Yadav**20th April 2015 6:55 PM

### CBSE XI Science Physics Motion in a Straight Line

## A body thrown vertically upwards from top of a building reaches the foot of the building in 5 sec;but it will take only 2 secif thrown vertically down with the same velocity.Calculate the height of the building.Given g=9.8m/sec^2.

**Benjamin**19th September 2015 5:43 PM

### ICSE X Physics Force

## A train starts from rest and moves with a constant acceleration 'a'. The guard of the train reaches the end of the platform with a speed 'v' and a passenger exactly in the middle of the train reaches the end of the platform with a speed 'u'. Determine hte speed with which a passenger seated mid-way between the guard and the passenger mentioned earlier, crossed the platform. Express it in the form of 'v'.

**bjayanta**4th May 2016 3:58 PM

### CBSE XI Science Physics Motion in a Straight Line

##
A rocket is fired upwards from earth's surface such that it creates an acceleration of 20 m/sec ^2 .
If after 5 sec its engine is switched off, the maximum height of the rocket from earth's surface will be ?

**Balbir**14th May 2016 4:40 PM

### CBSE IX Physics Motion

## A vehicle moving with a speed of 36km/hr see a red light ahead and applies breaks and stops after covering 10m distance on a moving. Another vehicle moving at a speed of 72km/hr and applying breaks it stops after covering 30m distance. Assuming same reaction time and same deceleration in each case what is the distance covered before stopping when breaks are applied on the vehicle when it is moving at a speed of 54km/hr

**Hrishikesh marathe**13th June 2016 7:11 AM

### CBSE IX Physics Motion

## A particle moving in straight line experience constant acceleration for 20 second after starting from rest. If it travel a distance S1 in the first 10 seconds and distane S2 in the next 10 seconds then find the relation between S1 and S2

**Hrishikesh marathe**13th June 2016 7:35 AM

### CBSE XI Science Physics Motion in a Straight Line

## Sir/mam
Can you please find the derivative dx/dt in the following question no. 8 (i) and write the steps involved ?

**Varsneya Srinivas**26th June 2016 6:22 PM

### ICSE X Physics Electrical Power and Household Circuits

## A car running at a speed of 72 km/hr is slowed down to 18 km/hr over a distance of 40 m.Calculate :(1) the retardation produced by the brakes.(2)time for which brakes are applied?

**nisha_vini29**3rd July 2017 12:24 PM

### CBSE XI Science Physics Motion in a Plane

## a stream 200m broad is running downward at the rate of 1 km/h .a swimmer who can swim at the rate of 2 km/h wishes to reach a point just opposite . along what line should he striker and how long will he taker is crossing ?

**hrushikesh.barik**11th October 2017 8:16 PM

### CBSE IX Physics Force and Laws of Motion

## A boy on a cliff 49 m high drops a stone. One second later, he throws a second stone after the first. They both hit the ground at the same time. With what speed he throw the second stone ?

**pratikoke20**31st October 2017 5:58 PM

### JEE ALL Class Physics Rotational Mechanics

## ques no 9

**chandanbr6004**15th November 2017 9:36 PM

### JEE ALL Class Physics Kinds Of Sentences

## ques no 10

**chandanbr6004**15th November 2017 9:40 PM

### JEE JEE (Main) Physics Motion in a Straight Line

## Solve this

**venkat**25th December 2017 8:59 PM

### JEE ALL Class Physics Motion in a Straight Line

## Solve this

**venkat**25th December 2017 9:05 PM

### CBSE IX Physics Force and Laws of Motion

## A ball is dropped on the floor from a height of 10 metre rebounds to a height of 2.5 M if the ball is in contact with the floor for 0.01 seconds what is the average acceleration during contact

**www.naresh**4th February 2018 7:28 AM

### ICSE IX Physics Motion in One Dimension

## A spacecraft flying in a straight course with velocity of 75 km/s fires its rocket motors for 6.0s. At the end of this time its velocity becomes 120 km/s . Find the distance travelled by the spacecraft in the first 10 s after the motors were started,the motors being in action for only 6.0s

**Adrija**21st February 2018 6:50 PM

### CBSE XI Science Physics Motion in a Straight Line

## The 2 ends of train ,moving with a constant acceleration,pass a certain with velocity u and v .Show that velocity with which the middle point of train passes the same point is root of(usquare +v square)/2

**ajaysekharjs**27th August 2018 11:54 AM