Distance traveled by him = circumference of that circular path = 2πr = 2π(3.5)
= 7π = 7×3.14 = 21.98 m
time = 8.9 s [ Given ]
Now, Average speed = distance / time
s = 21.98 / 8.9
s = 2.46 m/s
Hope this helps!
The speed is 0.956 m / s.
<u>Explanation</u>:
The kinetic energy is equal to the product of half of an object's mass, and the square of the velocity.
K.E = 1/2
m
![v^{2}](https://tex.z-dn.net/?f=v%5E%7B2%7D)
where K.E represents the kinetic energy,
m represents the mass,
v represents the velocity.
K.E = 1/2
m
![v^{2}](https://tex.z-dn.net/?f=v%5E%7B2%7D)
1.10
10^42 = 1/2
3.26
10^31
![v^{2}](https://tex.z-dn.net/?f=v%5E%7B2%7D)
= (1.10
10^42
2) / (3.26
10^31)
v = 0.956 m / s.
Answer:90N
Explanation:
Mass=30kg
Centripetal acceleration=3m/s^2
centripetal force=mass x centripetal acceleration
Centripetal force=30 x 3
Centripetal force =90
Centripetal force =90N
Answer: a
Explanation: because the answer is 1.4444444 and that's the closest