This question is true because it just is
Using Newton's law that F = ma.
The force here is the net force. The forces acting in opposite direction are the weight and the air resistance. The weight of course is acting downwards and the air resistance is pushing upwards.
Therefore:
W - AR = ma W = Weight = mg, AR = Air Resistance = 150.
g = 10 m/s2
mg - AR = ma
60(10) - 150 = 60a
600 - 150 = 60a
450 = 60a
60a = 450
a = 450/60
a = 7.5 m/s2
Cheers.
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of the returned signal.
2- Metal
explanation
metal is the only conductor listed
Answer:
350 W
Explanation:
50 steps × 0.12 m/step = 6 m
Power = work / time
P = mgh / t
P = (60 kg) (9.8 m/s²) (6 m) / 10 s
P = 352.8 W
Rounding to two significant figures, the power is 350 W.
