A jogger has an average stride length of 140 cm and takes an average of 200 steps per minute. The jogger's average speed would b
1 answer:
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Answer:
Explanation:
given,
mass of the body = 40 Kg
speed in x-axis = 238 m/s
mass break into three part
m₁ = 7 kg
v₁ = 356 m/s (along the positive y axis)
m₂ = 4.5 kg
v₂ = 357 m/s(along the negative x axis)
m₃ = 40 - (7 + 4.5) = 28.5 Kg
v₃ = ?
using conservation of momentum
MV = m₁v₁ + m₂v₂ + m₃v₃
Answer:
Yes, the car driver is exceeding the given limit.
Explanation:
<u>Given:</u>
- Speed of the car, v = 38.0 m/s.
- Speed limit of the highway,
We know,
1 mi = 1.60934 km.
1 km = 1000 m.
Therefore, 1 mi = 1.60934 × 1000 m = 1609.34 m.
1 hour = 60 minutes.
1 minute = 60 seconds.
Therefore, 1 hour = 60 × 60 seconds = 3600 seconds.
Using these values,
Therefore,
Clearly,
which means, the car driver is exceeding the given speed limit.
Answer:
m = 4
Explanation:
We have,
You apply a force of 600 N to the branch which acts as a lever. It means it is input force, IF = 600 N
The rear of the truck weighs 2,400 N. It means it is output force, OF = 2400 N
The ratio of output force to the input force is equal to the mechanical advantage of the lever arm. It is given by :
So, the mechanical gain of the lever arm is 4.