![bludragonfly33](/avatars/43470.jpg)
bludragonfly33
17.12.2019 •
Physics
A30 gram bullet is shot upward at a wooden block. the bullet is launched at the speed vi. it travels up 0.40 m to strike the wooden block. the wooden block is 20 cm wide and 10 cm high and its thickness gives it a mass of 500 g. the center of mass of the wooden block with the bullet in it travels up a distance of 0.60 m before reaching its maximum height.
Solved
Show answers
More tips
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
- G Goods and services How to Choose the Right High Chair for Your Baby?...
- S Style and Beauty Learn how to tie a keffiyeh on your head like a pro...
- S Style and Beauty How to braid friendship bracelets?...
Answers on questions: Physics
- P Physics Position vs. Time 30 20 10 Position (m) 10 - 20 - 30 o 10 20 30 40 50 Time (s) 60 70 6. Use the graph above to answer Question 6: The graph represents the motion of a car moving...
- P Physics . The artificial sweetener NutraSweet is a chemical called aspartame (C14H18N2O5). What is (a) its molecular mass (in atomic mass units)? (3) (b) the mass (in kg) of an aspartame...
- P Physics The energy for building a proton gradient is provided by...
- P Physics How many kilograms of air do you exhale? assume that the density of air is 1.3 kg/m3.?...
- P Physics 1. in which medium does sound travel the fastest? a. salt water b. fresh water c. air d. cast iron 2. a wave has a wavelength of 10 mm and a frequency of 5 hertz. what is its...
- P Physics The half-life of phosphorus-32 is 14.26 days. Calculate its decay constant....
- P Physics 3.04 Quiz What is Energy Quiz Pool 2 Match each type of energy with its description....
- P Physics Balancing Nuclear Equations Complete each nuclear fission reaction. 2U + n → Kr + Ba +3 n Pu+ n → Ba + Sr+3 n A B C:...
- P Physics 1. llaina travels across 5 miles of terrain at a speed of 25 mi/hr. How long did it take her to travel those 5 miles? Report your answer in minutes....
- P Physics Which ferromagnesian mineral is believed to constitute up to 50% of the mantle?...
Ответ:
Answer
Mass of bullet (m) = .03 kg
Mass of wooden block M = 0.5 kg
Since the center of mass of the wooden block with the bullet in it travels up a distance of 0.60 m before reaching its maximum height
finding the launch speed of bullet
Velocity of wooden block + bullet just after impact
= [\tex]\sqrt{2gh}[/tex]
=[\tex]\sqrt{2\times 9.8 \times 0.6}[/tex]
= 3.43 m/s
v₁ be the launch velocity
Applying law of conservation of momentum
0.03 x v₂ = 0.530 x 3.43
v₂ = 60.6 m /s
if v₁ be initial velocity
v₂² = v₁² + 2 g h
v₁² = v₂² - 2 gh
v₁² = 60.6 ² - 2 x (-9.8 )x 0.4
v₁ = 60.65 m /s this is launch speed
Ответ: