A car travels along a straight, level road. The car begins a distance x = 22 m from the origin at t = 0.0 s. At t = 3.3 s the car is at x = 80 m; at t = 8.5 s it is at x = 220 m. Find the average velocity of the car during the interval from t...
Velocity and Acceleration A car travels in a straight line for 1 hour. Its velocity v in miles per hour at six-minute intervals is shown in the table. (1)Produce a reasonable graph of the velocity function v by graphing these points and connecting them with a smooth curve....
A car A is travelling on a straight level road with a uniform speed of 60 km/h. It is followed by another car B which in moving with a speed of 70 km/h. When
7 A radio-controlled toy car travels along a straight line for a time of 15s.The variation with time t of the velocity v of the car is shown.6.0-v/ms-13.00051015t/s-3.0--6.0What is the average velocity of the toy car for the journey shown by the graph? B A -1.5ms^(-1) B ...
At time t = 0.00 s, a car is traveling along a straight line at a speed of 20 m/s with constant acceleration. The car travels 56.0 m during the time interval between t = 2.00 s and t = 4.00 s. What is the acceleration of the car? A. 14.0 m/ s 2 B. 7.00 m/ s 2 ...
Light travels in a ___ line. A. straight B. curved C. circle D. square 相关知识点: 试题来源: 解析 A。光沿直线传播,“straight”是直的;“curved”是弯曲的,不符合;“circle”是圆,不是线;“square”是正方形,也不是线的形状。反馈
A 3.07 m s–1 B 7.85 m s–1 C 15.7 m s–1 D 31.4 m s–1 6 A radio-controlled toy car travels along a straight line for a time of 15 s. The variation with time t of the velocity v of the car is shown. 6.0 –1 v/ m s 3.0 0 0 5 10 15 t/ s –3.0 –6.0 What ...
解析 [答案]typically [解析] [详解]考查副词。句意:光通常沿直线传播。分析句子可知,typical在这里修饰谓语动词travels,要用副词形式。故填typically。 [解析] [详解]考查副词。句意:光通常沿直线传播。分析句子可知,typical在这里修饰谓语动词travels,要用副词形式。故填typically。
Light travels in a straight line because ___. A. it has no mass B. it has high speed C. it has no resistance D. it has no charge 相关知识点: 试题来源: 解析 C。本题关于光的传播特性。选项 A“it has no mass”光没有质量不是其沿直线传播的原因。选项 B“it has high speed”光的...
Light travels in a straight line. This is called ___. A. reflection B. refraction C. rectilinear propagation D. diffraction 相关知识点: 试题来源: 解析 C。光沿直线传播叫 rectilinear propagation。选项 A 反射,不对;选项 B 折射,错误;选项 D 衍射,不符合。本题考查光的传播特点和英语表达。反馈...