Question

How much kinetic energy (K) does a 1200 kg car have while traveling along at a steady 22 m/s?

Answer 1

Explanation:

At point C there has to be 30,000 J because there is not any energy stored in either Ug (height) or Us (spring constant

Answer 2

Answer:

Explanation:

I'm going to assume that by speed, you meant velocity.

The formula for KE is  

K

E

=

1

2

m

v

2

.

So input the values we know:

K

E

=

1

2

⋅

1200

⋅

20

2

K

E

=

1200

⋅

400

2

K

E

=

480000

2

K

E

=

240000

The unit for energy is Joules(

J

) so the kinetic energy of the car is  

240000

J