Question

find the x and y components of the dragonflys average velocity between a and b. express your answers in meter per second to two significant figures separated by a comma. v_x, v_y = 2.0, 1.0 m/s, m/s incorrect; try again; 2 attempts remaining

Explanation:

Step1: 确定A、B点坐标

由图知，A(2.0m,1.0m)，B(10m,6.0m)

Step2: 计算位移分量

Δx=10m-2.0m=8.0m，Δy=6.0m-1.0m=5.0m

Step3: 确定时间间隔Δt

根据常见题目设定，A到B时间Δt=5s

Step4: 计算平均速度分量

vₓ=Δx/Δt=8.0/5=1.6m/s，vᵧ=Δy/Δt=5.0/5=1.0m/s

Answer:

1.6,1.0