I. A car of mass 1200 kg moves up a straight road. The road is inclined to the horizontal at an angle a where s na=1/(15) . The car is moving up the road with constant speed 10 m s-'and the engine of the car is working at a constant rate of 11 760 watts. The non-gra...
a car of mass 1500kg is moving up a straigt road,which is inclined at an angle *to the hrizontal,where sin*=1/14,the resistance to the motion of the car from non-gravitional forces is constant and is modelled as a single constant force magnitude 650N.The car's engine is working ...
5 A car of mass 900kg moves along a straight level road. The power developed by the car is constant and equal to 60kW. The resistance to the motion of the car is constant and equal to 1500N.At time t seconds the velocity of the car is denoted by vms1. Initially the car is at ...
A car of mass 1500 kg is accelerating at 2 m/s². What is the force acting on the car? 查看试卷及答案 相关搜索 1 PAT-2007-Paper 2 军考英语真题《历军考真题系列》 3 acceleration单位 -回复 4 ENERGYISTHEABILITYTODOWORK=TOAPPLYAFORCEOVERA 答案解析 A。本题考查牛顿第二定律 F = ma,其...
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 和 D 也是计算错误。反馈 收藏 ...
5 A car of mass500\mathrm{kg}is moving at10\mathrm{m/s}. When the driver decides to accelerate, a force of200\mathrm{N} acts on the car for12\mathrm{s}.Answer these questions to find out how fast the car moves after it has accelerated.a Calculate the impulse that makes the ca...
结果1 题目 3 A car of mass 1000 kg is moving on a road with an acceleration of 2.0 m/s2.What is the driving force of the engine if the car experiences a constant resistance of1000 N? D A 500 N B 1000 N C 2000 N D 3000 N 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
5 The motion of a car of mass 1400 kg is resisted by a constant force of magnitude 650 N.(i)Find the constant speed of the car on a horizontal road, assuming that the engine works at a rate of 20 kW.[2] (ii)The car is travelling at a constant speed of 10ms up a hill inclin...
A car of mass M=1500 kg traveling at 55.0 km/ hour enters a banked turn covered with ice. The road is banked at an angle θ, and there is no friction between the road and the car's tires as shown in ( Figure 1). Use g=9.80 ...
A car of mass 1,000 kg is driving along a straight road with a speed of 30 m/s. A truck of mass 10,000 kg is heading in the opposite direction with a speed of 20 m/s We call the direction of the car the positive direction. The...