CBSE Class 9 Answered
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<li><strong>A train starting from rest moves with a uniform acceleration of 0.2 m/s 2 for five minutes.Calculate the speed acquired and the distance travelled in this time. </strong></li>
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<li><strong>From a station ‘X’ a train starts from rest and attains a speed of 54 km/h in 10 s, then with this uniform speed it moves for 8 minutes and then by applying brakes it stops at station ‘Y’ in 6 s.Find the distance between station ‘X’ and ‘Y’.</strong></li>
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<li><strong>Draw a position-time graph and a speed-time graph for a ball thrown vertically upwardswhich comes to rest on reaching the ground.</strong></li>
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<li><strong>If a ball hits the ground with velocity ‘v’, it bounces back up with velocity ‘v’. If sucha ball is dropped from a height ‘h’ above the ground, how high will it bounce ? Justify your answer.</strong></li>
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<li><strong>Why does (second) 2 occurs in the unit of acceleration ?</strong></li>
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<li><strong>A body moving with a velocity of 2 m/s acquires a velocity of 10m/s in 5s. Find its acceleration.</strong></li>
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<li><strong>When can we say the motion of an object as uniform motion ? What can be the shape of thepath covered by a moving object to have uniform speed and uniform velocity ?</strong></li>
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Asked by arunk.agarwal | 25 May, 2016, 08:43: AM
Expert Answer
NOTE: Kindly post the other questions as separate queries.
Answered by Romal Bhansali | 26 May, 2016, 09:56: AM
Application Videos
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This video decribes the speed of a body in uniform circular motion. -
This video describes the difference netween distance covered and displaceme... -
This video describes the displacement covered by a body during its journey. -
This video explains the relation between velocity and displacement -
This video describes the relation between velocity and acceleration
Concept Videos
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Acceleration - Part 1
Define acceleration and retardation in context with uniform and non-unifor... -
Distance-Time Graph - Part 1
Interpret and calculate the slope of distance. Time graphs for a body in u... -
Equations of Motion
Derive and apply the three equations of motion using velocity-time graph f... -
Velocity
Interpret and calculate the slope of velocity. Time graphs for a body in u... -
Speed and Velocity - Part 1
Define speed, velocity, average speed and average velocity in context with ...
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