Kinetic energy is the production of energy by an object in motion. There are three subcategories of kinetic energy, including vibrational, which is caused by objects vibrating; rotational, which is caused by moving objects; and translational, which is caused by objects hitting one another. These ...
A. the mass of the object B. the velocity of the object C. the square of the velocity of the object D. the product of the mass and the velocity of the object 相关知识点: 试题来源: 解析 C。动能“kinetic energy”与物体速度的平方成正比。动能公式为 E=1/2mv²。选项 A 仅质量不行...
Suppose a projectile is launched with 200 kg{eq}\cdot {/eq}m/s of momentum and 1000 J of kinetic energy. What is the mass of the projectile? Kinetic Energy: The kinetic energy is directly proportional to the square of the momentum ...
What is the ratio of the final to the initial kinetic energy? What is the kinetic energy of a 0.17-kilogram hockey puck that is moving on nearly frictionless ice at 15 meters per second? Can heat be kinetic energy and potential energy?
Definition/Summary Kinetic energy (KE) is energy associated with movement as a whole (linear or rotational or both). Kinetic energy of a body...
What does “m” represent? A. kinetic energy B. velocity C. mass D. acceleration 相关知识点: 试题来源: 解析 C。本题考查物理公式中符号的含义。在公式 KE = 1/2mv²中,m 代表质量(mass)。A 选项 kinetic energy 是动能;B 选项 velocity 是速度;D 选项 acceleration 是加速度。
A car of mass 500 kg is moving at a speed of 20 m/s. What is its kinetic energy? A. 100000 J B. 10000 J C. 20000 J D. 50000 J 相关知识点: 试题来源: 解析 A。动能的计算公式为 Ek = 1/2mv²,代入数据可得 Ek = 1/2×500×20² = 100000 J。选项 B 计算错误,选项 C...
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Kinetic energy : The energy possessed by an object due to its motion is called kinetic energy. Numerical expression for K.E. : 1) Let us assume that an object of mass (m) is at rest on a smooth horizontal plane as shown in figure. 2) Let it be
edit: The kinetic energy of the electron is 0.34 MeV and thus the total energy will be 0.51MeV+0.34MeV = 0.85 MeVSo, I would say ((0.85Mev)2=(mc2)2+(pc)2 and not the special case View attachment 329678 Ugh, that is a bad sign. It means the professor is decades out...