Question

what is the work done to increase the velocity of a car from 36 km/hr
to 72 kilometre per hour if the mass is 1500 kg​

Answer 1

Answer:

W = 225000 Jule. answer....

Answer 2

Answer

• m = 1500 kg

• u = 36 km h⁻¹ = 10 m s⁻¹

• v = 72 km h⁻¹ = 20 m s⁻¹

• W = ?

Work done = Change in kinetic energy

= 1/2 m (v² - u²)

= 1/2 x 1500 x (20² - 10²)

=  225000 J