- #1
physkid1
- 8
- 0
1. How much energy is dissipated in braking a 1200-kg car to a stop from an initial speed of 30 m/s?
2. 1/2 mv(final)^2 - 1/2 mv(initial)^2
3. 1/2 x 1200 x 0^2 - 1/2 x 1200 x 30^2 = 540000J
is this right ? cheers
2. 1/2 mv(final)^2 - 1/2 mv(initial)^2
3. 1/2 x 1200 x 0^2 - 1/2 x 1200 x 30^2 = 540000J
is this right ? cheers