The electromagnetic wave shown above is made up of vibrating Electric fields.
I assume this is why electromagnetic waves can travel through a vacuum, due to lack of matter.
They bounce off just like sun rays when they heat the atmosphere they bounce off reflection
From the information given, there is a 15 kg mass that needs to be accelerated to a velocity of 2.8m/s²
We use the formula: F = m × v.
Where F = force, m = mass and v = velocity.
In our case, m = 15kg and v = 2.8m/s². Therefore:
F = m × v.
F = 15 × 2.8.
F = 42.
Therefore the net force needed to accelerate the 15kg mass to 2.8m/s² is 42 kg m/s² (or 42 Newtons)
Stratosphere is THE LAYER OF ATMOSPHERE THAT PROTECTS US because it contains OZONE. Ozone is also a layer that protects us from the direct rays/ UV RAYS of the SUN
A scalar is something that only has speed without a DIRECTION while a vector has direction. acceleration is a vector and mass is a scalar.