Answer:
v₀ = 9,798 ft / s
Explanation:
We can solve this problem with kinematics in one dimension, when the train stops the speed is zero, the acceleration is negative so that the train stops. Let's use the equation
v² = v₀² - 2 a d
v = 0
v₀ = √2 a d
In the problem it indicates that the acceleration is g / 2, we substitute
v₀ = √2 (g / 2) d
Let's calculate
v₀ = √ 2 32/2 3 = √32 3
v₀ = 9,798 ft / s
Answer:
A person changes from 100 kg to 75 kg after dieting
Explanation:
Answer:
983.400345675 hits per second
Explanation:
Radius = 14.2 cm
Record turn rate = 33 rev/min
Bump separation = 0.499 mm
Circumference of the record = 
Number of bumps in the groove = 
The rate which the bumps hit the stylus = 
The rate at which the bumps hit the stylus 983.400345675 hits per second