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Mayank1444
@mayank1444
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Joined: Oct 11, 2021
Last seen: Nov 14, 2021
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Answer to: A cyclist is travelling at 15 m s^-1. She applies brakes so that she does not collide with a wall 18 m away. What deceleration must she have?

Initial velocity, u = 15m/s Final velocity, v = 0 m/s Distance, s = 18 m Acceleration, a = ? Using relation, = 2as 02 - (15)2 = 2a x 18...

4 years ago
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Answer to: A train travelling at 20 m s^-1 accelerates at 0.5 m s^-2 for 30 s. How far will it travel in this time?

Initial velocity, u = 20 m/s Time, t = 30 s Acceleration, a = 0.5 m/s2 Distance travelled is s = s = 20 x 30 + x 0.5 x 30 x 30 s = 600...

4 years ago
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Answer to: A cheetah starts from, rest, and accelerates at 2 m/s^2 for 10 seconds. Calculate: (a) the final velocity (b) the distance travelled.

Initial velocity, u = 0 m/s Final velocity, v = ? Acceleration, a = 2m/s2 Time, t = 10s (a) Using, v = u + at v = 0 + 2 x 10 = 20 m/s ...

4 years ago
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Answer to: A train starting from rest moves with a uniform acceleration of 0.2 m/s^2 for 5 minutes. Calculate the speed acquired and the distance travelled in this time.

Initial velocity, u = 0 m/s Final velocity, v = ? Acceleration, a = 0.2 m/s2 Time, t = 5 min = 5 x 60 = 300 sec Using, v = u + at v = 0 ...

4 years ago
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Answer to: A bus running at a speed of 18 km/h is stopped in 2.5 seconds by applying brakes. Calculate the retardation produced.

Initial velocity, u = 18 km/h Final velocity, v = 0 m/s Time, t = 2.5 sec Acceleration, a = ? Using, v = u + at Initial velocity, u = 18...

4 years ago
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Answer to: A motorcycle moving with a speed of 5 m/s is subjected to an acceleration of 0.2 m/s^2. Calculate the speed of the motorcycle after 10 seconds, and the distance travelled in this time.

Initial velocity, u = 5 m/s Final velocity, v = ? Acceleration, a = 0.2m/s2 Time, t = 10 sec Using, v = u + at v = 5 + 0.2 x 10 v = 5...

4 years ago
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4 years ago
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Answer to: Increased asthmatics attacks in certain seasons are related to

Correct answer: (4) inhalation of seasonal pollen

4 years ago
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Answer to: Which one of the following is the correct statement regarding the particular psychotropic drug specified?

Correct answer: (2) Hashish causes after thought perceptions and hallucinations

4 years ago
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