Question

An object of mass 5kg is moving with the velocity of 10 m/s.its velocity increase to50m/s on applying a contest force continusily of 4s?

Calculate the acceeration of the object?

Answer 1

Answer:

vavg = sum of velocity /no of velocity

50-10/4 = 10 m/sec2

Answer 2

Complete Question :

An object of mass 5 kg is moving with the velocity of 10 m/s. Its velocity increase to 50 m/s on applying a contest force continusily of 4 s. Calculate the acceleration of the body and the force.

Answer :

Given :

• Initial velocity (u) = 10 m/s
• Final velocity (v) = 50 m/s
• Time (t) = 4 seconds
• Mass (m) = 5 kg

To find :

• Acceleration (a) &
• Force (F)

According to the question,

→ v = u + at

Where,

• v stands for Final velocity
• u stands for Initial velocity
• a stands for Acceleration
• t stands for Time

→ Substituting the values,

→ 50 = 10 + a × 4

→ 50 - 10 = 4a

→ 40 = 4a

→ 40 ÷ 4 = a

→ 10 = a

.°. The acceleration is 10 m/s²..

Now,

→ Force = Mass × Acceleration

Or,

→ F = ma

→ F = 5 × 10

→ F = 50 N

.°. The force is 50 Newton.

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