A 10 kg block of ice is at rest on a frictionless horizontal surface. A 1.0 N force is applied in East direction for 1.0 s. During this time interval, the block:
Correct answer: B. acquires a momentum of 1.0 kg m/s
- A. acquires a speed of 1 m/s
- B. acquires a momentum of 1.0 kg m/s
- C. moves 10 cm
- D. acquires a kinetic energy of 0.1 J
Explanation
The correct answer is that the block acquires a momentum of 1.0 kg m/s. This is derived from the equation ΔP = Ft, which calculates the change in momentum. Here, the force applied is 1.0 N for a period of 1.0 s, resulting in a change in momentum of 1.0 kg m/s.Option A is incorrect because it incorrectly calculates the speed of the block. Option C is incorrect because it requires additional calculations to determine displacement, which are not provided. Option D is incorrect because the calculated kinetic energy using the derived velocity is actually 0.05 J, not 0.1 J.
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