Question

A large truck has a mass of 20,000kg. It is traveling at 28m/s along a straight road.
a) Calculate the truck's kinetic energy.

b) When the driver applies the brakes, the truck slows down with an acceleration of 2.0m/s2. Calculate the time it will take for the truck to stop.

c) Calculate the truck's momentum. Calculate the force of the brakes on the truck.
The trucks average speed as it slows down is 14m/s (half of 28m/s)

d)Calculate the distance traveled by the truck as it slows down.

e) calculate the work done by the force of the brakes.
f) explain why your answers to parts a and e should be the same.

Answer 1

Answer:

Grammar. Most singular nouns are made plural by simply putting an -s at the end. There are many different rules regarding pluralization depending on what letter a noun ends in. Irregular nouns do not follow plural noun rules, so they must be memorized or

Answer 2

Answer:

Explanation:

kinetic energy - 1/2 mv square=

2.1778 kWh