### CBSE IX Physics Motion

## 1. A car is travelling along the road at 8 m/s .It accelerates at 1m/s2 for a distance of 18m. How fast is it travelling?

2.The distance between mumbai to delhi is 1384. A train starts from Mumbai at 4pm and reaches delhi at 10 am the next day.What is its average speed?

3.State the 3 equations of motion. Which equation describes velocity-time relation and position -time relation?

4. A cheetah starts from rest and accelerates at 2 m/s2 for 10 seconds. Calculate the final velocity and the distance travelled?

**Vaibhav BR**16th May 2014 11:55 AM

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

## What does negative slope of a position -time graph actually represent? I mean that it does indicate motion in the opposite direction, but does it also represent the fact that the velocity of the object is decreasing? Also, shouldn't graphs representing motion in an opposite direction start from the origin and move below the x-axis, but I have seen in many graphs that the graph for motion in opposite direction starts from a point above the x-axis?
Please help me clear this doubt regarding negative slopes of graphs.

**kumar.ashlesha**9th May 2016 10:02 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 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 Plane

## 1. Determine the horizontal velocity u with which a stone must be projected from point p of height h so that it may hit the inclined plane perpendicularly. Inclination is theta and inclined plane is kept just below point p at ground. Give the value in terms of g, h and cot theta. 2. Point A moves uniformly with velocity v so that vector v is continually aimed at point B which in its turn moves rectilinearly with velocity u<v. Initially, u perpendicular to v and separation was l. How soon will the points converge. Plz answer both the questions as I have exam tommorow.

**arijitodisha**13th June 2016 10:37 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

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

## A student goes from his house to his friend's house with speed v1. Finding the door of his friend's closed,return back to his own house with the speed v2. Then the average speed of the student is

**Anil**28th May 2017 6:28 PM

### CBSE XI Science Physics

## The velocity of a particle moving on the x-axis is given by v=x^2+x, where x is in m and v is in m/s. What is its position when its acceleration is 30 m/s^2

**Anil**18th June 2017 7:59 PM

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

## q

**gpnkumar0**2nd October 2017 11:23 AM

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

## q

**gpnkumar0**2nd October 2017 11:27 AM

### JEE JEE (Main) Physics Rotational Mechanics

## ques 6 and ques 7

**rbhatt16**12th October 2017 4:58 PM

### JEE JEE (Main) Physics Centre of Mass and the Law of Conservation of Momentum

## a small ball is dropped from a height h onto a rigid frictionless plate at b and rebounds find the maximum height reached after rebound if the coffecient of restitution between the ball and the plate is e=0.75

**harinderk13**30th October 2017 10:44 AM

### NEET NEET Kinematics

## A particle starts from rest and traverses a distance l with uniform acceleration, then moves uniformly over a further distance 2l and finally comes to rest after moving a further distance 3l under uniform retardation. Assuming entire motion to be rectilinear motion, the ration of average speed over the journey to the maximum speed on its way is:

**Arushi Juyal**12th November 2017 3:22 PM