A car is travelling at a speed of 72km/h, the brakes are applied to produce a uniform acceleration of -1 m/s2. Find the distance it travels after applying brakes so that it completely stops?
Good morning guys......
Share
A car is travelling at a speed of 72km/h, the brakes are applied to produce a uniform acceleration of -1 m/s2. Find the distance it travels after applying brakes so that it completely stops?
Good morning guys......
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Step-by-step explanation:
u = 72 km/hr
= 72*1000/3600
= 20 m/s
v = 0
a = -1 m/s^2
2as = v^2 - u^2
2 * -1 * s = 0^2 - 20 ^ 2
-2s = 0 - 400
s = -400 / -2
s = 200
Verified answer
Answer : 200s
Step-by-step explanation:
a: -1 m/S2
a=v-u/t
-1= 0- 200/t
cross multiplication
-t = -200
t=200s