Question

How much work must be done on a 1,000-kg car to increase its speed from 1 m/s to 2 m/s

Answer 1

3 Joules

Step-by-step explanation:

KE1 + W = KE2

`(1)/(2)mv_(1)^(2) +W=(1)/(2)mv_(2)^(2)`

`v_(1)^(2) +W=v_(2)^(2)`

`(1)^(2)+W=(2)^(2)\\1+W=4\\W=3\ Joules`

Answer 2

Answer: 1,500 J

Explanation: A-P-E-X