in how much time an object having mass of 1000 kg will speed up from 1

1.	in how much time an object having mass of 1000 kg will speed up from 10 m/s to 50 m/s, if 5000 N force will be applied over it.
Answer» Time taken to speed up from 10 m/s to 50 m/s is 8 seconds. Explanation Given that mass of object (m) = 1000 kg, initial speed (u) = 10 m/s, final speed (v) = 50 m/s, Force applied (F) = 5000 N We have to find time taken by object to speed up at that speed. Solution At first USING NEWTON's 2nd LAW :- → Force = Mass * Acceleration → 5000 = 1000 * Acceleration → Acceleration = 5000/1000 → Acceleration = 5 m/s² Now using 1st equation of motion : → v = u + at → 50 = 10 + 5t → 50 - 10 = 5t → 40 = 5t → t = 40/5 → t = 8 s Therefore, time taken by object to speed up to 50 m/s is 8 seconds.

in how much time an object having mass of 1000 kg will speed up from 10 m/s to 50 m/s, if 5000 N force will be applied over it.

Answer»

Time taken to speed up from 10 m/s to 50 m/s is 8 seconds.

Explanation

Given that mass of object (m) = 1000 kg, initial speed (u) = 10 m/s, final speed (v) = 50 m/s, Force applied (F) = 5000 N

We have to find time taken by object to speed up at that speed.

Solution

At first USING NEWTON's 2nd LAW :-

→ Force = Mass * Acceleration

→ 5000 = 1000 * Acceleration

→ Acceleration = 5000/1000

→ Acceleration = 5 m/s²

Now using 1st equation of motion :

→ v = u + at

→ 50 = 10 + 5t

→ 50 - 10 = 5t

→ 40 = 5t

→ t = 40/5

→ t = 8 s

Therefore, time taken by object to speed up to 50 m/s is 8 seconds.

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