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Question

An object of mass 50 kg, starting from rest, accelerates constantly and attains a speed of 10 m/s  in 5 seconds. The force applied on the object is ___ N.


Your Answer
A
50 N
Correct Answer
B
100 N
Your Answer
C
10 N
Your Answer
D
5 N

Solution

The correct option is B 100 N

Initial velocity (u) = 0, final velocity (v) = 10 m/s, time (t) = 5 s, Mass (m) = 50 kg,

Force (F) = ?

We know that, Force F  = m vut
Therefore, F=50×1005m/s2 
F  =  100 N

Thus, the force applied on the body is = 100 N

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