Question

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

Answer 1

ke =1/2mv2
1000=1/2*50000*v2
v2=2000/50000
v2=1/25
v=1/5=.2

Answer 2

We know:- Kinetic Energy = mv^2/2
Given:- K. e = 50,000 J, mass = 1000 kg
Velocity = √(2 K.E. / m) = √(2×50000 / 1000)
Velocity= √100
Velocity= 10 m/s.
Hope it helps...❤️❤️