Physics: Calculating Final Velocity
To find the final velocity of the body, we can use the equations of motion. The problem provides the mass of the body, the acceleration produced by a force, and the time elapsed.
Given Information:
- Mass of the body, \(m = 4\) kg
- Initial velocity, \(u = 0\) m/s (since the body is at rest)
- Acceleration, \(a = 3\) m/s²
- Time, \(t = 5\) s
Applying the Equation of Motion:
The first equation of motion relates final velocity (\(v\)), initial velocity (\(u\)), acceleration (\(a\)), and time (\(t\)):
\( v = u + at \)
Calculation:
Substitute the given values into the equation:
\( v = 0 \, \text{m/s} + (3 \, \text{m/s}^2) \times (5 \, \text{s}) \)
\( v = 0 + 15 \, \text{m/s} \)
\( v = 15 \, \text{m/s} \)
Result:
The final velocity of the body after 5 seconds is 15 m/s.
Important Questions from Motion
The rate of change in the velocity of an object per unit time is referred as ________.
Which of the following is a correct equation of motion?
The acceleration of an object is said to be _______ when an object travels in a straight line and its velocity increases or decreases by an equal amounts in equal intervals of time.
What is the friction force employed between the two surfaces interacted in relative speed?
The rate of change of momentum of an object is
