A force of 6 N acts on a 1.5 kg object for 0.5 s. What is the change in velocity?

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Prepare for the Year 10 Force and Motion Test. Utilize flashcards and multiple-choice questions with clear hints and explanations to ensure success. Equip yourself for excellence on your exam!

Multiple Choice

A force of 6 N acts on a 1.5 kg object for 0.5 s. What is the change in velocity?

Explanation:
When a constant force acts on a mass, it causes acceleration given by a = F / m. The change in velocity is then Δv = a · Δt. Here, a = 6 N / 1.5 kg = 4 m/s^2. Over 0.5 s, the velocity changes by Δv = 4 m/s^2 × 0.5 s = 2 m/s. So the change in velocity is 2 m/s. If you check the other options, they'd require different force or time (for example, to reach 3 m/s you'd need a larger acceleration, which would come from a larger force, and so on), but with the given numbers you get 2 m/s.

When a constant force acts on a mass, it causes acceleration given by a = F / m. The change in velocity is then Δv = a · Δt.

Here, a = 6 N / 1.5 kg = 4 m/s^2. Over 0.5 s, the velocity changes by Δv = 4 m/s^2 × 0.5 s = 2 m/s.

So the change in velocity is 2 m/s. If you check the other options, they'd require different force or time (for example, to reach 3 m/s you'd need a larger acceleration, which would come from a larger force, and so on), but with the given numbers you get 2 m/s.

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