<span>Force = Work done / distance = 4Nm / 2m = 2N</span>
Temperature is how hot or cold something is,barometric is air pressure(when the pressures high,the weather is dry)humidity is how moist the air is and how many water particles are there, wind speed and direction is how the hot and cold air is moving and how fast,which makes wind (high to low, hot to cold) precipitation is how much it is raining at that point.
Mirrors reflect light waves.
Yes humans have traveled in space before
