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物理测试

Total questions: 1

Worksheet time: 6mins

Name
Class
Date

1-2.

Answer the questions below after watching the video

1.

将一个小球以10m/s的速度沿水平方向抛出,小球经过1s的时间落地.不计空气阻力作用,

取g=10 m/s?

求:抛出点与落地点在竖直方向的高度差;

a)

h = 8

b)

h = 5

c)

h = 10

d)

h = 6

2.

将一个小球以10m的速度沿水平方向抛出,小球经过1s的时间落地.不计空气阻力作用,

取g=10m/s

求:小球落地时的速度大小,以及速度与水平方向的夹角

a)

v = 10210\sqrt[]{2}

θ\theta = 45°45\degree

b)

v = 1010

θ\theta = 3030

c)

v = 55

θ\theta = 45°45\degree

d)

v = 88

θ\theta = 30°30\degree