Changes
From Karnataka Open Educational Resources
4 bytes removed
, 12:32, 24 December 2012
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| to be positive and in the same direction as then velocity vector. | | to be positive and in the same direction as then velocity vector. |
| What happens when you pedal faster on a bicycle? | | What happens when you pedal faster on a bicycle? |
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− | Which | + | Which one of these tables represent positive acceleration? |
− | one of these tables represent positive acceleration?
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− | f an object is moving in a line and its speed is decreasing,
| + | If an object is moving in a line and its speed is decreasing, |
| the change in velocity is negative. The acceleration in this case is | | the change in velocity is negative. The acceleration in this case is |
| reducing the velocity and is considered to be negative and in the | | reducing the velocity and is considered to be negative and in the |
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− | 1. In everyday life, you come | + | 1. In everyday life, you come across a range of motions in which |
− | across a range of motions in which | |
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− | 2. Starting from a stationary | + | 2. Starting from a stationary position, Rahul pedals his bicycle to attain a velocity of 6 m/s in |
− | position, Rahul pedals his bicycle to attain a velocity of 6 m/s in | |
| 30 seconds. Then he applies the brakes in such a way that the | | 30 seconds. Then he applies the brakes in such a way that the |
| velocity of the bicycle comes down to 4 m/s in the next 5 seconds. | | velocity of the bicycle comes down to 4 m/s in the next 5 seconds. |