Question

An object of mass m = 10 kg is initially going to the right with a speed of 0.5 m/s experiences an applied force of 5 N to the right and a frictional force of 1 N for 3 m. What is the final velocity of the object? How many seconds does this take?

Answer 1

The final velocity of an object can be calculated using the equation: v = u + (F - f) * t / m, where v is the final velocity, u is the initial velocity, F is the applied force, f is the frictional force, t is the time, and m is the mass of the object.

Plugging in the given values, we have: v = 0.5 + (5 - 1) * 3 / 10 = 0.5 + 4 * 3 / 10 = 0.5 + 12 / 10 = 1.7 m/s

Therefore, the final velocity of the object is 1.7 m/s. To find the time it takes to reach this velocity, we can use the equation: v = u + a * t, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. Since the acceleration in this case is zero (friction cancels out the applied force), the time it takes for the object to reach the final velocity is 0 seconds.

Learn more about Calculating final velocity