Answer:
The value is 
Explanation:
From the question we are told that
The landing speed is 
The distance traveled is 
The velocity it is reduced to is 
Generally the average acceleration is mathematically represented as

=> 
=> 
140 ? i’m guessing there doesn’t look like there’s much to the question
Velocity. Velocity is physical vector quantity; both magnitude and direction are needed to define it. Magnitude is this case meaning speed.
Answer:
True

Explanation:
As we know that total charge is always quantized and in the terms of multiples of charge of single electron
so we have
Q = Ne
here we know that

also we know that

so we have


Since this charge is in multiple of micro coulomb units so yes it is possible to measure it
and the magnitude of this charge is given as

None he is undergoing constant uniform velocity. Acceleration is the rate of change of velocity