A block of mass 5 kg is moving with speed of 8 m/s on a horizontal smooth surface. A force of 10 N is applied on it for 3 sec in direction opposite to it's motion. Final speed of the particle is

Question

A block of mass 5 kg is moving with speed of 8 m/s on a horizontal smooth surface. A force of 10 N is applied on it for 3 sec in direction opposite to it's motion. Final speed of the particle is ____ m/s.

Answer:

2

Solution:

Retardation: $a = - \frac{10}{5} = - 2$ m/s $^{2}$

$v = u + a t = 8 - 2 \times 3$

$v = 2$ m/s

TestHub · Accepted Answer

Retardation: a = − 5 10 ​ = − 2 m/s 2 v = u + a t = 8 − 2 × 3 v = 2 m/s

Physics - NLM Question with Solution | TestHub

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