I got a different answer for #2
The momentum of the brick is 15.84 Kg m/s.
We have a 1.6 kg brick parachuting straight downward.
We have to determine its Momentum.
<h3>What is Linear Momentum ?</h3>
The linear momentum of a body of mass M moving with velocity v is -
p = mv.
According to the question -
Mass = 1.6 Kg
Velocity = 9.9 m/s
Therefore -
p = 1.6 x 9.9 = 15.84 Kg m/s
Hence, the momentum of the brick is 15.84 Kg m/s.
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Answer:
25 m/s
Explanation:
Centripetal acceleration is the square of the tangential velocity divided by the radius.
a = v² / r
15.625 m/s² = v² / (40 m)
v² = 625 m²/s²
v = 25 m/s
The speed of the car is 25 m/s.
Divide 8.5by 10then *100equals 85%