2. An object moving with a speed of 25 m/s and has a kinetic energy of 500 J, what is the mass of the object?

Given,

Ke=500J

V=25m/s

m=?

Now

Ke=1/2m*v^2

500=1/2*m*25^2

500=625/2*m

500=312.5m

500/312.5=m

1.6=m

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it