Force = mass x acceleration
113N = 25.2a
a = 4.48 m/s^2
Vf = Vi + at
Vf = 2.33 + 4.48(2) = 11.3 m/s
Can you get a better pic so i can read it
Work = (force) x (distance)
1 time: (400 newtons) x (3 meters) = 1,200 joules
15 times: (1,200 joules) x (15) = 18,000 joules
Answer:
The angular acceleration is
Explanation:
From the question we are told that
The angular speed is
The angular displacement is
From the first equation of motion we can define the movement of the record as
Given that the record started from rest
So
The story sure is exciting. But when you're ready to work on answering the question, you can ignore everything before the assumptions.
-- When the pilot hit the snow, he was allegedly falling at 50 m/s.
-- His mass is 85 kg.
-- So his kinetic energy was (1/2) (mass) (speed squared) =
(1/2) (85) (50)² = <em>106,250 joules</em>
-- That's the energy that something else has to absorb in order to
reduce his speed to zero.
-- How far he fell, or what size crater he made in the snow, are irrelevant.