Answer:
True
Explanation: In pulley's , length of cables doesn't change.
Answer:
5 billion years ago...ends 4.9 billion years later
There all diffrent speeds
Answer:
3.33 m/s²
Explanation:
If the acceleration is constant, it is equal to the average acceleration:
a = Δv / Δt
First, convert km/hr to m/s:
300 km/hr × (1 hr / 3600 s) × (1000 m/km) = 83.33 m/s
a = (83.33 m/s − 0 m/s) / 25 s
a = 3.33 m/s²
Answer: t = 10s
Explanation:
Assuming there's no air resistance,
Initial velocity (u) = 0 m/s
Acceleration by gravity (a) = 9.81 m/s^2
Displacement (s) = 500m
Time taken (t) = ?
Now,
Use formula,
s = u×t + (1/2)×a×t^2
s = 0×t + (1/2)×9.81×t^2
500 = 4.905×t^2
t = 10s