How is he getting 1.21 m/s

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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How is he getting 1.21 m/s
Figure 4 for a diagram of the projectile motion.
The
maximum
height of
the
launch
be
calculated
can
given that
vy2 = 0 m/s,
vyl = 8.71sin8
1.21 m/s,
dy = 0.491 m and
a = -9.8 m/s2 -
using
the
formula
hmax = (vy22 - vyl)/2a) + dy . After calculations, the maximum height of the projectile is 0.566m.
Finally, the impact velocity can be calculated by first finding the vy2 using vy2 = Vvy1 + 2ad - given that
vyl =-8.71sin8 =- 1.21m/s, a =-9.8 m/s2 and d =-0.491m. After calculations, vy2 = 3.33 m/s. To find the
impact velocity, the horizontal and vertical components of velocity must
be added [
V impact = Vvx² +vy2 ] to give Vimpact = 9.25 m/s @21 ah. Refer to Figure 4 for a diagram of the
projectile motion.
op
Transcribed Image Text:Figure 4 for a diagram of the projectile motion. The maximum height of the launch be calculated can given that vy2 = 0 m/s, vyl = 8.71sin8 1.21 m/s, dy = 0.491 m and a = -9.8 m/s2 - using the formula hmax = (vy22 - vyl)/2a) + dy . After calculations, the maximum height of the projectile is 0.566m. Finally, the impact velocity can be calculated by first finding the vy2 using vy2 = Vvy1 + 2ad - given that vyl =-8.71sin8 =- 1.21m/s, a =-9.8 m/s2 and d =-0.491m. After calculations, vy2 = 3.33 m/s. To find the impact velocity, the horizontal and vertical components of velocity must be added [ V impact = Vvx² +vy2 ] to give Vimpact = 9.25 m/s @21 ah. Refer to Figure 4 for a diagram of the projectile motion. op
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