In the mid-1600s, the great English physicist Isaac Newton figured out that the amount of force needed to move an object was directly related to both the mass of the object and how it is accelerated. (Pushing a pebble clearly takes less force than pushing a boulder, and pushing a ...
In the mid-1600s, the great English physicist Isaac Newton figured out that the amount of force needed to move an object was directly related to both the mass of the object and how it is accelerated. (Pushing a pebble clearly takes less force than pushing a boulder, and pushing a ...
A car moves forward. The force that makes it move is ___. A. pull B. push C. lift D. drag 相关知识点: 试题来源: 解析 B。汽车向前移动是由推力推动的。选项 A“pull”是拉;选项 B“push”是推;选项 C“lift”是举起;选项 D“drag”是拖。反馈...
A car moves on the road. The force that helps it move forward is ___. A. wind force B. gravity C. friction force D. thrust force 相关知识点: 试题来源: 解析 D。A 选项“wind force”是风力;B 选项“gravity”是重力;C 选项“friction force”是摩擦力;D 选项“thrust force”是推力。...
{eq}\textbf{Answer:}\text{ The average force needed to stop a car (1000 kg) traveling 28 m/s in 55 m is }\color{red}{7127\ \rm N}. {/eq} {eq}\textbf...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a ...
The force that causes an automobile to move is the frictional force. It is the force that acts on the road by the wheels of the automobiles that...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts...
Eq. (1.2-15) defines the centripetal force needed to maintain a mass, m, in a circular orbit of radius R, when rotating at a rate ω rad/sec. What is the magnitude of the tangential velocity, and what is the centripetal force as a function of this speed. View chapter Chapter Fundamen...
If his motor continues to perform with high speed and efficiency, he says he'll move forward and cooperate with car companies. He hopes that one day his motor will be the design of choice for electric vehicles.24. What is the author's purpose in writing Paragraph 2? A. To explain the...
A man exerts a force of 200 N in pulling a cart at a constant speed of 16 m s−1.Calculate the power spent by the man. View Solution Find the average frictional force needed to stop a a car weighing 500 kg in a distance of 25 m (the initial speed is 72 km/h.) View Solution...
But for applications such as the car - which relies on a power transmission system based on gears, linkages and a clutch - a more complex solution is needed.Without some kind of gearing system the rotational speeds required to move a car at any speed beyond the average for London traffic ...