If a 4 kg object is at rest and a net force of 8 N is applied, what will be its

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Question: If a 4 kg object is at rest and a net force of 8 N is applied, what will be its velocity after 2 seconds?

Options:

Correct Answer: 2 m/s

Solution:

Using F = ma, a = F/m = 8 N / 4 kg = 2 m/s². Velocity after 2 seconds = a * t = 2 m/s² * 2 s = 4 m/s.

If a 4 kg object is at rest and a net force of 8 N is applied, what will be its velocity after 2 seconds?

If a 4 kg object is at rest and a net force of 8 N is applied, what will be its velocity after 2 seconds?

Step 1: Identify the mass of the object, which is 4 kg.
Step 2: Identify the net force applied to the object, which is 8 N.
Step 3: Use the formula F = ma to find the acceleration (a).
Step 4: Rearrange the formula to solve for acceleration: a = F/m.
Step 5: Substitute the values into the formula: a = 8 N / 4 kg.
Step 6: Calculate the acceleration: a = 2 m/s².
Step 7: Identify the time duration for which the force is applied, which is 2 seconds.
Step 8: Use the formula for velocity: velocity = acceleration * time.
Step 9: Substitute the values into the formula: velocity = 2 m/s² * 2 s.
Step 10: Calculate the final velocity: velocity = 4 m/s.

Newton's Second Law of Motion – This law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Kinematics – This involves the equations of motion that relate acceleration, time, and velocity.