A motion sensor acts as a transmitter when it sends out pulses and as a receiver when it listens for echoes. The delay ∆t betwee
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Answer:
the rate of acceleration of the train is 4 m/s²
Explanation:
Given;
initial velocity of the train, u = 10 m/s
change in time of motion, dt = 5 s
final velocity of the train, v = 30 m/s
The rate of acceleration of the train is calculated as;
Therefore, the rate of acceleration of the train is 4 m/s²
The time it takes for a point to reach 0 displacement from maximum displacement is 
of a cycle. Thus, one period (
) will take 
.
The frequency is simply
.
The speed is given by:
The frequency is simply
The speed is given by:
Answer:
Explanation:
m = Mass rocket = 1070 kg
v = Velocity of rocket = 3.75 m/s
a = Acceleration of rocket = 5g
g = Acceleration due to gravity =
The energy balance of the system is given by
The force balance of the system is given by
The distance the spring must be compressed is
The force constant of the spring is .