Question

If a car travels 50m distance in 4s with a acceleration of 5metre per second square then, what is its initial speed?

Answer 1

hope it helps u......

Answer 2

Answer: Using the second equation of motion: s = ut + 1/2 at2

where: s = distance covered =50 m

u = initial velocity = ?

a = acceleration = 5 m/s2

t = time = 4s

s = ut + 1/2 at2

50 = u x 4s + 1/2 x 5 x 16

50 = u x 4s + 40

50 = u x 4s + 40

50 – 40 = u x 4s

10 = u x 4s

u = 10/4 m/s = 2.5 m/s.