Speed, why velocity has direction acceleration Is a change in speed and it doesn't give a direction so it's speed
Explanation:
Here,
initial velocity(u)=25m/s
final velocity (v)=0m/s
time taken(t)= 5 second
Now,
Answer:
c) nonzero, directed toward the spaceship
Explanation:
As we know that net gravitational force due to spherical shell inside all its points will always be zero
So if planet is a spherical shell then inside the planet net gravitational force is zero on the people living in it
So when massive spaceship land on the surface of planet then the gravitational force of the spaceship is experienced by the people inside the shell
So here the gravitational force on the people is nonzero and it is towards the spaceship which landed on the surface of planet
Answer: The correct answer would be C. Salt crystals are hard and brittle because they are made up of atoms that combine by ionic bonding.
Explanation: All the other ones are chemical changes because a new substance is formed.
Answer:
2C charge will flow from ground and cloud
Explanation:
We have given rate rate of flow of charge 
Time is given as 
WE have to find the how much charge flows between the ground and cloud in this time
So the charge flow is given by 
So 2C charge will flow from ground and cloud