Question

a car expands an energy of 25,000 J while moving at a constant speed of 5ms^-1 what is the mass of the car

Answer 1

Answer:

Given,

Kinetic energy (K.E) = 25000J

Velocity = 5m/s

By applying, K.E = 1/2mv^2

25000 = 1/2×m×25

25000 = 12.5m

m = 25000/12.5

m = 2000kg.

MARK IT AS BRAINLIEST.

Answer 2

Answer:

KE - 25000 J

v - 5m/s

KE = 1/2 mv²

25000 = 1/2 × m × 25

25000/25 = 1/2 × m

1000 = 1/2 × m

1000×2 = 1×m

2000kg = m

Please mark it as the brainliest answer. I really need help ......