What is the magnitude of the initial velocity?

Magnitude of initial velocity

To calculate the magnitude of the velocity at any point in time, multiply the constant acceleration rate times the time difference and then add it to the initial velocity. As an example, if you dropped a rock off a cliff, its velocity increases by 32 feet per second, every second.

momentum of soft ball three times less than baskey ball

so easy. just google the electromagnetic waves and it’ll pop up.