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-

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Standard X

Physics

Second Law of Motion

An object of ...

Question

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

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Solution

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

Force (F) = ?

We know that, Force $F = m \frac{v - u}{t}$
Therefore, $F = 50 k g \frac{10 - 0 m / s}{5 s}$

$= 50 k g \times 2 \frac{m}{s^{2}}$

$F = 100 k g \frac{m}{s^{2}} = 100 N$

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

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An object of mass 50 kg, starting from rest, accelerates constantly and attains a speed of 10ms in 5 seconds. The force applied on the object is ___ 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=mv−ut Therefore, F=50kg10−0 m/s5s =50 kg× 2ms2 F=100kgms2=100N Thus, the force applied on the body is = 100 N

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