Hi there!
Recall the equation for momentum:

p = linear momentum (kgm/s)
m = mass (kg)
v = velocity (m/s)
We can calculate each object's momentum and compare.
Cement truck:

Race car:

<u>Since 100,000 > 90,000, the cement truck has the greater momentum.</u>
Short answer: No
DNA polymerase is an enzyme responsible for copying DNA strands. Lactase is an enzyme responsible for breaking down lactose.