Question

1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed?

Answer 1

½mv²= KE

½(1000)?²= 50000

500*?²= 50000

/500 /500

? ²=100

Square root

?= 10

10 m/s is you answer

Answer 2

its speed is 10 m/s ...