Question

MOUNT LITERA ZEE SCHOOL, LATUR.

CLASS: IX NUMERICALS WORKSHEET: MOTION DATE: 24/07/2020

1. A car increases its speed from 20 km/h to 50 km/h in 10 seconds. What is its acceleration​

Answer 1

Answer:

0.834 metre per second square

Explanation:

u = 20  kmph = 20*(5/18) = 5.55 m/s

v = 50 kmph = 13.89 m/s

t = 10 s

a = (v-u)/t = (13.89-5.55)/10

= 8.34/10

= 0.834 metre per square second