Question

A car accelerates uniformly from 20 km per hour to 35 km per hour in 5 seconds. calculate


1-acceleration in meter per second square

2-distance travelled in meters during that time


please answer as soon as possible

Answer 1

Answer:

50/9 metre square to 35/234

Explanation:

Divide 20 by 5/18 and 35 by 5/18

Answer 2

Answer:

1)0.83 m/s^2 2)38.194m

Explanation:

u=20km/h. v=35km/h

=100/18 m/s. =175/18 m/s

t=5s

1)Using first eq of motion

a=(v-u)/t

=(175/18- 100/18)/5

=(75/18)/5

=75/90=5/6=0.83m/s^2

2)using second eq of motion

s=ut+1/2at^2

=(100/18)*5 + 1/2 *5/6* 25

=500/18+ 125/12

=1000/36 + 375/36

=1375/36=38.194m