A 3 kg block on a frictionless surface experiences a constant acceleration of 1.67 m/s^2. What is its velocity after 4 seconds if the initial velocity is 0?

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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 3 kg block on a frictionless surface experiences a constant acceleration of 1.67 m/s^2. What is its velocity after 4 seconds if the initial velocity is 0?

Explanation:
Constant acceleration makes velocity increase in a straight-line way with time. The relation is v = v0 + a t. Here the initial velocity is 0, the acceleration is 1.67 m/s^2, and time is 4 s. So v = 0 + 1.67 × 4 = 6.68 m/s, which is about 6.7 m/s. On a frictionless surface nothing else changes that, and mass doesn’t affect this result in this context. The number that matches 6.7 m/s is the correct choice.

Constant acceleration makes velocity increase in a straight-line way with time. The relation is v = v0 + a t. Here the initial velocity is 0, the acceleration is 1.67 m/s^2, and time is 4 s. So v = 0 + 1.67 × 4 = 6.68 m/s, which is about 6.7 m/s. On a frictionless surface nothing else changes that, and mass doesn’t affect this result in this context. The number that matches 6.7 m/s is the correct choice.

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