Refer to the following figure when answering the next three questions (20 through 22).. . The diagram below depicts two pucks on a frictionless table. Puck

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🗣️ Trần Hậu Thành hỏi: Cho mình hỏi một câu Mechanics Baseline Test (MBT) - English bài tập về nhà

Refer to the following figure when answering the next three questions (20 through 22).

The diagram below depicts two pucks on a frictionless table. Puck B is four times as massive as puck A. Starting from rest, the pucks are pushed across the table by two equal forces.

20-22

Which puck has the greater kinetic energy upon reaching the finish line?

(A) Puck A.

(B) Puck B.

(C) The both have the same amount of kinetic energy.

(D) Too little information to answer.

👩 Đánh giá của giáo viên: Câu này trung bình, mức độ hiểu.

🔑 Chủ đề: trac nghiem.

Câu trả lời hay nhất

🕵 Bạn Võ Văn Dũng trả lời:

Chọn câu (C): The both have the same amount of kinetic energy.

since both pucks are initially at rest, the final kinetic energy of each puck is equal to the work done by the force F which is W = F.d and independent of the mass of the pucks. Therefore, two pucks have the same speed at finish line.

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Các câu trả lời

👤 Phạm Khanh Trường viết:

Chọn C, The both have the same amount of kinetic energy.

➥ 🗣️ Trần Hậu Thành trả lời: Cảm ơn bạn, câu này hình như có trong file doc này Đề của VLTT-03 (Khó và Hay)

👤 Trần Liêm Danh viết:

Chọn D, Too little information to answer.

👤 Lê Hậu Bình viết:

Chọn B, Puck B.

👤 Trần Trọng Thuận viết:

Chọn A, Puck A.

👤 Trần Thị Trí viết:

Chọn C: The both have the same amount of kinetic energy.

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