I find it ironic people can intuitively understand why material object speed can only approach c, but be never equal to it.
Imagine an object that is traveling at 0.9c accelerating to 0.99c(+0.09c)
1.each hour the object accelerates by 10% of previous acceleration.
e.g. 0.9c,0.99c,0.999c,0.9999c
2.Will its speed will be equal to c at any time?