Answer:
because speed is the modulus of velocity which is a vector
the velocity to be zero it must be a round trip
Explanation:
This is because speed is the modulus of velocity which is a vector.
For the velocity to be zero it must be a round trip, therefore the resulting vector zero
On the other hand, the speed of the module is the same in both directions
Answer:
The distance is 
Explanation:
From the question we are told that
The period of the moon 
The mass of the planet is 
Generally the period of the moon is mathematically represented as
Here G is the gravitational constant with value
=>
=> 
=> 
=> ![r = \sqrt[3]{ 1.7031241*10^{23}}](https://tex.z-dn.net/?f=r%20%3D%20%5Csqrt%5B3%5D%7B%201.7031241%2A10%5E%7B23%7D%7D)
j
=>
<h2>
Impulse = 4.9 kgm/s</h2>
Explanation:
Impulse is given by change of momentum.
Mass of softball = 0.49 kg
Initial velocity of softball = 13 m/s
Initial momentum = 0.49 x 13 = 6.37 kgm/s
Final velocity of softball = 23 m/s
Final momentum = 0.49 x 23 = 11.27 kgm/s
Change of momentum = Final momentum - Initial momentum
Change of momentum = 11.27 - 6.37
Change of momentum = 4.9 kgm/s
Impulse = Change of momentum
Impulse = 4.9 kgm/s
