Suppose the object moving is dave, who hasamassofmo =66kgatrest. whatis daveâs mass at 90% of the speed of light? at 99% of the speed of light? at 99.9% of the speed of light? and how fast should dave be moving to have a mass of 500 kg?

Step-by-step explanation:

Formula that relates the mass of an object at rest and its mass when it is moving at a speed v:

Where :

m = mass of the oebjct in motion

= mass of the object when at rest

v = velocity of a moving object

c = speed of the light =

We have :

1) Mass of the Dave =

Velocity of Dave ,v= 90% of speed of light = 0.90c

Mass of the Dave when moving at 90% of the speed of light:

m = 151.41 kg

Mass of Dave when when moving at 90% of the speed of light is 151.41 kg.

2) Velocity of Dave ,v= 99% of speed of light = 0.99c

Mass of the Dave when moving at 99% of the speed of light:

m = 467.86 kg

Mass of Dave when when moving at 99% of the speed of light is 467.86 kg.

3) Velocity of Dave ,v= 99.9% of speed of light = 0.999c

Mass of the Dave when moving at 99.9% of the speed of light:

m = 1,467.17 kg

Mass of Dave when when moving at 99.9% of the speed of light is 1,467.17 kg.

4) Mass of the Dave =

Velocity of Dave,v=?

Mass of the Dave when moving at v speed of light: 500

Dave should be moving at speed of .

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1