Aempty truck whose mass is
2000kg has a maximum acceleration of
im/s. what will its maximum
accelerate when it carries a load of 1000kg

Explanation:

We can solve the problem by using Newton's second law:

where

F is the net force on the truck

m is the mass of the truck+load

a is the acceration

At the beginning, the mass of the truck is

m = 2000 kg

and its acceleration is

So, the maximum force that the engine of the truck can produce is

Later, a load of 1000 kg is put on the truck, so the new mass is

m = 2000 + 1000 = 3000 kg

The maximum force that the engine can produce is the same, so the new maximum acceleration of the truck will be:

0.11 m/s and 0.28 m/s should be correct

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.