Question

A mass of 5 kg is acted upon by a force of 2 N starting from rest how how much distance is covered by the mass in 10 seconds

Answer 1

1.6 m is the correct answer of this questions

Answer 2

Answer:

Distance is 20 m.

Explanation:

Since we know the mathematical form of Newton's second law of motion

F=ma................(1)

Where F is the applied force a is the acceleration and m is the mass of the body.

used equation (1) we get,

$2=5\times a$

So,

$a=0.4m/s^{2}$

We know that the acceleration is the ratio of velocity and time.

$a=\dfrac{v}{t}$

t=10 Sec.

So,

0.4 x 10=v

4 m/s = v

Assume initial velocity is zero.

We know the equation of motion.

$s=ut+\dfrac{at^{2}}{2}$

So,

$s=\dfrac{at^{2}}{2}\\\\s=\dfrac{0.4\times 10^{2} }{2}\\ \\s=20 m$