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If a 4 kg object is at rest and a net force of 8 N is applied, what will be its
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?
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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?
4 m/s
2 m/s
1 m/s
0 m/s
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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.
Questions & Step-by-step Solutions
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Q: 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?
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.
Steps: 10
Show Steps
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.
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