what is the momentum of a 3kg object when it's speed is 30m/s/s?

相关推荐

• 英语翻译1.Use Newton's laws of motion to describe what happens when you kick a soccer ball.2.Explain why Newton's first law of motion is sometimes called the law of inertia?3.Determine whether the inertia of an object changes as the object's velocity changes.4.Explain why an object with a smaller mass has a larger acceleration than an object with a larger mass if the same force acts on each.5.You push a book across a table.The book moves at a constant spe
• what is the momentum of a 3kg object when it's speed is 30m/s/s?
• 根据句意及汉语注释,写出空缺处单词的正确形式1The animals ran in all_____(方向)when they heard the noise.2We can get what we need by_____(订购)them online.It's fast and easy.3Everyone should speak to the old_____(礼貌的).4Gong Li has played many different _____(角色)in many films.5You mast_____(缩减)your speed when you come to traffic lights.
• 英文A 89 mph slider thrown by NY Mets Ace Matt Harvey spins at a rate of1900 rpm.(a) What is the angular momentum of the slider?(b) If it takes 0.06 s for himto spin the ball from rest when he pitches,what is the torque he applies to the ball?Abaseball is 0.14 kg in mass and 9.25 inches in circumference.
• 1.Mike reported a theft to the police.同义句转换,请用英语翻译句子,1.Mike reported a theft to the police.2.What's your favorite hobby 3.When did the story happen?4.Don't lose your temper.It's nothing.5.The car can run at the speed of 120km per hour 6.The thief escaped from the police station yesterday7.The light went out suddenly8.The man put the money in that drawer secretly.9.My mother work as a pianist.
• Nastia Luikin can reduce her rotational inertia by a factor of about 3.3when changing from a straight position to a tuck position.If it takes her 0.4 s to makeone full rotation (or revolution) in a straight position,what is her angular speed when in atuck position?Provide your answer in rev/s as well as in rad/s.我不是要翻译。
• A glaucous-winged gull,ascending straight upward at 5.20m/s,drops a shell when it is 12.5m above the ground.a) What is the magnitude and direction of the shell's acceleration just after it is released?b) Find the maximum height above the ground reached by the shell.c) How long does it take for the shell to reach the ground?d) What is the speed of the shell at this time?a) 9.81m/s^2b) 13.9mC) 2.21sd) 16.5m/s
• 英语翻译a pulsar is a celestial object that emits llight in short burst a pulsar in the crab nebula flashes at a rate of 30 times/s,suppose the light pulses are caused by the rotation of a spherical object that emits light from a pair of diametrically opposed "flashlights" on its equator.what is the maximum radius of the pulasae if no part of its surface can move faster than the speed of light?
• 一个物理题.帮帮,A hot air balloon decends toward the ground with a velocity of (2.0 m/s).A champagne bottle is opened to celebrate takeoff,expelling the cork horizontally with a velocity of (4.0 m/s) relative to the balloon.When opened,the bottle is 6.2 m above the ground.(Neglect air resistance.) 1.What is the speed of the cork,and its initial direction of motion,as seen by the same observer?2.Determine the maximum height above the ground attained by the co
• 英语翻译Every one of them was proud of what they'd financed.They seem to have bought it for the purpose of being proud,of showing off,of keeping up with the Joneses."Look at my new..." is everybody's favorite phrase,even when the object in question isn't theirs at all and won't be new when they've finally paid for it if they ever do.
• 0.01公分等于多少?
• 春日中什么写出了春天万紫千红的特点