Question

If a car travels 50 m distance in 4 s with a acceleration of 5 m/s², then what was its initial speed?​

Answer 1

Answer:

u=2.5 m/s

Step-by-step explanation:

using formula s=ut+ $\frac{1}{2}$$at^{2}$

s=50m

u= u

t= 4 secs

a= 5 m/$s^{2}$

50=u*4+ $\frac{1}{2}$* 5* $4^{2}$

50= 4u+ $\frac{1}{2}$*5*16

50=4u+ 40

50-40=4u

10=4u

10/4= u

u= 2.5 m/s