Answer: 53125joules
Explanation: The formula for kinetic energy is 1/2mv^2.
So we would have
1/2[(170)(25x25)]=53125
Answer:
5833.33
Explanation:
= Angular acceleration
= Number of revolutions
= Initial angular speed = 0
t = Time taken = 2 s
Final angular speed

From the equation of rotational motion we have


The number of revolutions is 5833.33
Answer:
the new length is 17.435cm
Explanation:
the new length is 17.435cm
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Formula to calculate speed:
Speed=Distance/Time
Distance: 24 m
Time: 3 sec
24/3=8
So the correct answer is 8 m/s